20321210

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{137}}^1\times {\mathrm{163}}^1$

素因数の和:327

約数の個数: 64

約数和(自身を含む): 45626112

約数和(自身を除く): 25304902

約数列:

[1, 2, 5, 7, 10, 13, 14, 26, 35, 65, 70, 91, 130, 137, 163, 182, 274, 326, 455, 685, 815, 910, 959, 1141, 1370, 1630, 1781, 1918, 2119, 2282, 3562, 4238, 4795, 5705, 8905, 9590, 10595, 11410, 12467, 14833, 17810, 21190, 22331, 24934, 29666, 44662, 62335, 74165, 111655, 124670, 148330, 156317, 223310, 290303, 312634, 580606, 781585, 1451515, 1563170, 2032121, 2903030, 4064242, 10160605, 20321210]

約数ペア:

[(1, 20321210), (2, 10160605), (5, 4064242), (7, 2903030), (10, 2032121), (13, 1563170), (14, 1451515), (26, 781585), (35, 580606), (65, 312634), (70, 290303), (91, 223310), (130, 156317), (137, 148330), (163, 124670), (182, 111655), (274, 74165), (326, 62335), (455, 44662), (685, 29666), (815, 24934), (910, 22331), (959, 21190), (1141, 17810), (1370, 14833), (1630, 12467), (1781, 11410), (1918, 10595), (2119, 9590), (2282, 8905), (3562, 5705), (4238, 4795)]