20110320

素因数分解:

$2^4\times 3^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{53}}^1$

素因数の和:120

約数の個数: 240

約数和(自身を含む): 75209472

約数和(自身を除く): 55099152

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 17, 18, 20, 24, 30, 31, 34, 36, 40, 45, 48, 51, 53, 60, 62, 68, 72, 80, 85, 90, 93, 102, 106, 120, 124, 136, 144, 153, 155, 159, 170, 180, 186, 204, 212, 240, 248, 255, 265, 272, 279, 306, 310, 318, 340, 360, 372, 408, 424, 465, 477, 496, 510, 527, 530, 558, 612, 620, 636, 680, 720, 744, 765, 795, 816, 848, 901, 930, 954, 1020, 1054, 1060, 1116, 1224, 1240, 1272, 1360, 1395, 1488, 1530, 1581, 1590, 1643, 1802, 1860, 1908, 2040, 2108, 2120, 2232, 2385, 2448, 2480, 2544, 2635, 2703, 2790, 3060, 3162, 3180, 3286, 3604, 3720, 3816, 4080, 4216, 4240, 4464, 4505, 4743, 4770, 4929, 5270, 5406, 5580, 6120, 6324, 6360, 6572, 7208, 7440, 7632, 7905, 8109, 8215, 8432, 9010, 9486, 9540, 9858, 10540, 10812, 11160, 12240, 12648, 12720, 13144, 13515, 14416, 14787, 15810, 16218, 16430, 18020, 18972, 19080, 19716, 21080, 21624, 22320, 23715, 24645, 25296, 26288, 27030, 27931, 29574, 31620, 32436, 32860, 36040, 37944, 38160, 39432, 40545, 42160, 43248, 47430, 49290, 54060, 55862, 59148, 63240, 64872, 65720, 72080, 73935, 75888, 78864, 81090, 83793, 94860, 98580, 108120, 111724, 118296, 126480, 129744, 131440, 139655, 147870, 162180, 167586, 189720, 197160, 216240, 223448, 236592, 251379, 279310, 295740, 324360, 335172, 379440, 394320, 418965, 446896, 502758, 558620, 591480, 648720, 670344, 837930, 1005516, 1117240, 1182960, 1256895, 1340688, 1675860, 2011032, 2234480, 2513790, 3351720, 4022064, 5027580, 6703440, 10055160, 20110320]

約数ペア:

[(1, 20110320), (2, 10055160), (3, 6703440), (4, 5027580), (5, 4022064), (6, 3351720), (8, 2513790), (9, 2234480), (10, 2011032), (12, 1675860), (15, 1340688), (16, 1256895), (17, 1182960), (18, 1117240), (20, 1005516), (24, 837930), (30, 670344), (31, 648720), (34, 591480), (36, 558620), (40, 502758), (45, 446896), (48, 418965), (51, 394320), (53, 379440), (60, 335172), (62, 324360), (68, 295740), (72, 279310), (80, 251379), (85, 236592), (90, 223448), (93, 216240), (102, 197160), (106, 189720), (120, 167586), (124, 162180), (136, 147870), (144, 139655), (153, 131440), (155, 129744), (159, 126480), (170, 118296), (180, 111724), (186, 108120), (204, 98580), (212, 94860), (240, 83793), (248, 81090), (255, 78864), (265, 75888), (272, 73935), (279, 72080), (306, 65720), (310, 64872), (318, 63240), (340, 59148), (360, 55862), (372, 54060), (408, 49290), (424, 47430), (465, 43248), (477, 42160), (496, 40545), (510, 39432), (527, 38160), (530, 37944), (558, 36040), (612, 32860), (620, 32436), (636, 31620), (680, 29574), (720, 27931), (744, 27030), (765, 26288), (795, 25296), (816, 24645), (848, 23715), (901, 22320), (930, 21624), (954, 21080), (1020, 19716), (1054, 19080), (1060, 18972), (1116, 18020), (1224, 16430), (1240, 16218), (1272, 15810), (1360, 14787), (1395, 14416), (1488, 13515), (1530, 13144), (1581, 12720), (1590, 12648), (1643, 12240), (1802, 11160), (1860, 10812), (1908, 10540), (2040, 9858), (2108, 9540), (2120, 9486), (2232, 9010), (2385, 8432), (2448, 8215), (2480, 8109), (2544, 7905), (2635, 7632), (2703, 7440), (2790, 7208), (3060, 6572), (3162, 6360), (3180, 6324), (3286, 6120), (3604, 5580), (3720, 5406), (3816, 5270), (4080, 4929), (4216, 4770), (4240, 4743), (4464, 4505)]