20022920

素因数分解:

$2^3\times 5^1\times {\mathrm{37}}^1\times {\mathrm{83}}^1\times {\mathrm{163}}^1$

素因数の和:294

約数の個数: 64

約数和(自身を含む): 47113920

約数和(自身を除く): 27091000

約数列:

[1, 2, 4, 5, 8, 10, 20, 37, 40, 74, 83, 148, 163, 166, 185, 296, 326, 332, 370, 415, 652, 664, 740, 815, 830, 1304, 1480, 1630, 1660, 3071, 3260, 3320, 6031, 6142, 6520, 12062, 12284, 13529, 15355, 24124, 24568, 27058, 30155, 30710, 48248, 54116, 60310, 61420, 67645, 108232, 120620, 122840, 135290, 241240, 270580, 500573, 541160, 1001146, 2002292, 2502865, 4004584, 5005730, 10011460, 20022920]

約数ペア:

[(1, 20022920), (2, 10011460), (4, 5005730), (5, 4004584), (8, 2502865), (10, 2002292), (20, 1001146), (37, 541160), (40, 500573), (74, 270580), (83, 241240), (148, 135290), (163, 122840), (166, 120620), (185, 108232), (296, 67645), (326, 61420), (332, 60310), (370, 54116), (415, 48248), (652, 30710), (664, 30155), (740, 27058), (815, 24568), (830, 24124), (1304, 15355), (1480, 13529), (1630, 12284), (1660, 12062), (3071, 6520), (3260, 6142), (3320, 6031)]