281353520

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{853}}^1$

素因数の和:923

約数の個数: 160

約数和(自身を含む): 813281280

約数和(自身を除く): 531927760

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 19, 20, 28, 31, 35, 38, 40, 56, 62, 70, 76, 80, 95, 112, 124, 133, 140, 152, 155, 190, 217, 248, 266, 280, 304, 310, 380, 434, 496, 532, 560, 589, 620, 665, 760, 853, 868, 1064, 1085, 1178, 1240, 1330, 1520, 1706, 1736, 2128, 2170, 2356, 2480, 2660, 2945, 3412, 3472, 4123, 4265, 4340, 4712, 5320, 5890, 5971, 6824, 8246, 8530, 8680, 9424, 10640, 11780, 11942, 13648, 16207, 16492, 17060, 17360, 20615, 23560, 23884, 26443, 29855, 32414, 32984, 34120, 41230, 47120, 47768, 52886, 59710, 64828, 65968, 68240, 81035, 82460, 95536, 105772, 113449, 119420, 129656, 132215, 162070, 164920, 185101, 211544, 226898, 238840, 259312, 264430, 324140, 329840, 370202, 423088, 453796, 477680, 502417, 528860, 567245, 648280, 740404, 907592, 925505, 1004834, 1057720, 1134490, 1296560, 1480808, 1815184, 1851010, 2009668, 2115440, 2268980, 2512085, 2961616, 3516919, 3702020, 4019336, 4537960, 5024170, 7033838, 7404040, 8038672, 9075920, 10048340, 14067676, 14808080, 17584595, 20096680, 28135352, 35169190, 40193360, 56270704, 70338380, 140676760, 281353520]

約数ペア:

[(1, 281353520), (2, 140676760), (4, 70338380), (5, 56270704), (7, 40193360), (8, 35169190), (10, 28135352), (14, 20096680), (16, 17584595), (19, 14808080), (20, 14067676), (28, 10048340), (31, 9075920), (35, 8038672), (38, 7404040), (40, 7033838), (56, 5024170), (62, 4537960), (70, 4019336), (76, 3702020), (80, 3516919), (95, 2961616), (112, 2512085), (124, 2268980), (133, 2115440), (140, 2009668), (152, 1851010), (155, 1815184), (190, 1480808), (217, 1296560), (248, 1134490), (266, 1057720), (280, 1004834), (304, 925505), (310, 907592), (380, 740404), (434, 648280), (496, 567245), (532, 528860), (560, 502417), (589, 477680), (620, 453796), (665, 423088), (760, 370202), (853, 329840), (868, 324140), (1064, 264430), (1085, 259312), (1178, 238840), (1240, 226898), (1330, 211544), (1520, 185101), (1706, 164920), (1736, 162070), (2128, 132215), (2170, 129656), (2356, 119420), (2480, 113449), (2660, 105772), (2945, 95536), (3412, 82460), (3472, 81035), (4123, 68240), (4265, 65968), (4340, 64828), (4712, 59710), (5320, 52886), (5890, 47768), (5971, 47120), (6824, 41230), (8246, 34120), (8530, 32984), (8680, 32414), (9424, 29855), (10640, 26443), (11780, 23884), (11942, 23560), (13648, 20615), (16207, 17360), (16492, 17060)]