281049720

素因数分解:

$2^3\times 3^1\times 5^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{43}}^1\times {\mathrm{251}}^1$

素因数の和:346

約数の個数: 256

約数和(自身を含む): 1021870080

約数和(自身を除く): 740820360

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 20, 21, 24, 28, 30, 31, 35, 40, 42, 43, 56, 60, 62, 70, 84, 86, 93, 105, 120, 124, 129, 140, 155, 168, 172, 186, 210, 215, 217, 248, 251, 258, 280, 301, 310, 344, 372, 420, 430, 434, 465, 502, 516, 602, 620, 645, 651, 744, 753, 840, 860, 868, 903, 930, 1004, 1032, 1085, 1204, 1240, 1255, 1290, 1302, 1333, 1505, 1506, 1720, 1736, 1757, 1806, 1860, 2008, 2170, 2408, 2510, 2580, 2604, 2666, 3010, 3012, 3255, 3514, 3612, 3720, 3765, 3999, 4340, 4515, 5020, 5160, 5208, 5271, 5332, 6020, 6024, 6510, 6665, 7028, 7224, 7530, 7781, 7998, 8680, 8785, 9030, 9331, 10040, 10542, 10664, 10793, 12040, 13020, 13330, 14056, 15060, 15562, 15996, 17570, 18060, 18662, 19995, 21084, 21586, 23343, 26040, 26355, 26660, 27993, 30120, 31124, 31992, 32379, 35140, 36120, 37324, 38905, 39990, 42168, 43172, 46655, 46686, 52710, 53320, 53965, 54467, 55986, 62248, 64758, 70280, 74648, 75551, 77810, 79980, 86344, 93310, 93372, 105420, 107930, 108934, 111972, 116715, 129516, 139965, 151102, 155620, 159960, 161895, 163401, 186620, 186744, 210840, 215860, 217868, 223944, 226653, 233430, 259032, 272335, 279930, 302204, 311240, 323790, 326802, 334583, 373240, 377755, 431720, 435736, 453306, 466860, 544670, 559860, 604408, 647580, 653604, 669166, 755510, 817005, 906612, 933720, 1003749, 1089340, 1119720, 1133265, 1295160, 1307208, 1338332, 1511020, 1634010, 1672915, 1813224, 2007498, 2178680, 2266530, 2342081, 2676664, 3022040, 3268020, 3345830, 4014996, 4533060, 4684162, 5018745, 6536040, 6691660, 7026243, 8029992, 9066120, 9368324, 10037490, 11710405, 13383320, 14052486, 18736648, 20074980, 23420810, 28104972, 35131215, 40149960, 46841620, 56209944, 70262430, 93683240, 140524860, 281049720]

約数ペア:

[(1, 281049720), (2, 140524860), (3, 93683240), (4, 70262430), (5, 56209944), (6, 46841620), (7, 40149960), (8, 35131215), (10, 28104972), (12, 23420810), (14, 20074980), (15, 18736648), (20, 14052486), (21, 13383320), (24, 11710405), (28, 10037490), (30, 9368324), (31, 9066120), (35, 8029992), (40, 7026243), (42, 6691660), (43, 6536040), (56, 5018745), (60, 4684162), (62, 4533060), (70, 4014996), (84, 3345830), (86, 3268020), (93, 3022040), (105, 2676664), (120, 2342081), (124, 2266530), (129, 2178680), (140, 2007498), (155, 1813224), (168, 1672915), (172, 1634010), (186, 1511020), (210, 1338332), (215, 1307208), (217, 1295160), (248, 1133265), (251, 1119720), (258, 1089340), (280, 1003749), (301, 933720), (310, 906612), (344, 817005), (372, 755510), (420, 669166), (430, 653604), (434, 647580), (465, 604408), (502, 559860), (516, 544670), (602, 466860), (620, 453306), (645, 435736), (651, 431720), (744, 377755), (753, 373240), (840, 334583), (860, 326802), (868, 323790), (903, 311240), (930, 302204), (1004, 279930), (1032, 272335), (1085, 259032), (1204, 233430), (1240, 226653), (1255, 223944), (1290, 217868), (1302, 215860), (1333, 210840), (1505, 186744), (1506, 186620), (1720, 163401), (1736, 161895), (1757, 159960), (1806, 155620), (1860, 151102), (2008, 139965), (2170, 129516), (2408, 116715), (2510, 111972), (2580, 108934), (2604, 107930), (2666, 105420), (3010, 93372), (3012, 93310), (3255, 86344), (3514, 79980), (3612, 77810), (3720, 75551), (3765, 74648), (3999, 70280), (4340, 64758), (4515, 62248), (5020, 55986), (5160, 54467), (5208, 53965), (5271, 53320), (5332, 52710), (6020, 46686), (6024, 46655), (6510, 43172), (6665, 42168), (7028, 39990), (7224, 38905), (7530, 37324), (7781, 36120), (7998, 35140), (8680, 32379), (8785, 31992), (9030, 31124), (9331, 30120), (10040, 27993), (10542, 26660), (10664, 26355), (10793, 26040), (12040, 23343), (13020, 21586), (13330, 21084), (14056, 19995), (15060, 18662), (15562, 18060), (15996, 17570)]