656209240

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^2\times {\mathrm{43}}^1\times {\mathrm{397}}^1$

素因数の和:513

約数の個数: 96

約数和(自身を含む): 1565047440

約数和(自身を除く): 908838200

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 40, 43, 62, 86, 124, 155, 172, 215, 248, 310, 344, 397, 430, 620, 794, 860, 961, 1240, 1333, 1588, 1720, 1922, 1985, 2666, 3176, 3844, 3970, 4805, 5332, 6665, 7688, 7940, 9610, 10664, 12307, 13330, 15880, 17071, 19220, 24614, 26660, 34142, 38440, 41323, 49228, 53320, 61535, 68284, 82646, 85355, 98456, 123070, 136568, 165292, 170710, 206615, 246140, 330584, 341420, 381517, 413230, 492280, 529201, 682840, 763034, 826460, 1058402, 1526068, 1652920, 1907585, 2116804, 2646005, 3052136, 3815170, 4233608, 5292010, 7630340, 10584020, 15260680, 16405231, 21168040, 32810462, 65620924, 82026155, 131241848, 164052310, 328104620, 656209240]

約数ペア:

[(1, 656209240), (2, 328104620), (4, 164052310), (5, 131241848), (8, 82026155), (10, 65620924), (20, 32810462), (31, 21168040), (40, 16405231), (43, 15260680), (62, 10584020), (86, 7630340), (124, 5292010), (155, 4233608), (172, 3815170), (215, 3052136), (248, 2646005), (310, 2116804), (344, 1907585), (397, 1652920), (430, 1526068), (620, 1058402), (794, 826460), (860, 763034), (961, 682840), (1240, 529201), (1333, 492280), (1588, 413230), (1720, 381517), (1922, 341420), (1985, 330584), (2666, 246140), (3176, 206615), (3844, 170710), (3970, 165292), (4805, 136568), (5332, 123070), (6665, 98456), (7688, 85355), (7940, 82646), (9610, 68284), (10664, 61535), (12307, 53320), (13330, 49228), (15880, 41323), (17071, 38440), (19220, 34142), (24614, 26660)]