201212121580

素因数分解:

$2^2\times 5^1\times {\mathrm{29}}^1\times {\mathrm{139}}^1\times {\mathrm{181}}^1\times {\mathrm{13789}}^1$

素因数の和:14147

約数の個数: 96

約数和(自身を含む): 442725192000

約数和(自身を除く): 241513070420

約数列:

[1, 2, 4, 5, 10, 20, 29, 58, 116, 139, 145, 181, 278, 290, 362, 556, 580, 695, 724, 905, 1390, 1810, 2780, 3620, 4031, 5249, 8062, 10498, 13789, 16124, 20155, 20996, 25159, 26245, 27578, 40310, 50318, 52490, 55156, 68945, 80620, 100636, 104980, 125795, 137890, 251590, 275780, 399881, 503180, 729611, 799762, 1459222, 1599524, 1916671, 1999405, 2495809, 2918444, 3648055, 3833342, 3998810, 4991618, 7296110, 7666684, 7997620, 9583355, 9983236, 12479045, 14592220, 19166710, 24958090, 38333420, 49916180, 55583459, 72378461, 111166918, 144756922, 222333836, 277917295, 289513844, 346917451, 361892305, 555834590, 693834902, 723784610, 1111669180, 1387669804, 1447569220, 1734587255, 3469174510, 6938349020, 10060606079, 20121212158, 40242424316, 50303030395, 100606060790, 201212121580]

約数ペア:

[(1, 201212121580), (2, 100606060790), (4, 50303030395), (5, 40242424316), (10, 20121212158), (20, 10060606079), (29, 6938349020), (58, 3469174510), (116, 1734587255), (139, 1447569220), (145, 1387669804), (181, 1111669180), (278, 723784610), (290, 693834902), (362, 555834590), (556, 361892305), (580, 346917451), (695, 289513844), (724, 277917295), (905, 222333836), (1390, 144756922), (1810, 111166918), (2780, 72378461), (3620, 55583459), (4031, 49916180), (5249, 38333420), (8062, 24958090), (10498, 19166710), (13789, 14592220), (16124, 12479045), (20155, 9983236), (20996, 9583355), (25159, 7997620), (26245, 7666684), (27578, 7296110), (40310, 4991618), (50318, 3998810), (52490, 3833342), (55156, 3648055), (68945, 2918444), (80620, 2495809), (100636, 1999405), (104980, 1916671), (125795, 1599524), (137890, 1459222), (251590, 799762), (275780, 729611), (399881, 503180)]