65987840

素因数分解:

$2^8\times 5^1\times {\mathrm{31}}^1\times {\mathrm{1663}}^1$

素因数の和:1715

約数の個数: 72

約数和(自身を含む): 163258368

約数和(自身を除く): 97270528

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 32, 40, 62, 64, 80, 124, 128, 155, 160, 248, 256, 310, 320, 496, 620, 640, 992, 1240, 1280, 1663, 1984, 2480, 3326, 3968, 4960, 6652, 7936, 8315, 9920, 13304, 16630, 19840, 26608, 33260, 39680, 51553, 53216, 66520, 103106, 106432, 133040, 206212, 212864, 257765, 266080, 412424, 425728, 515530, 532160, 824848, 1031060, 1064320, 1649696, 2062120, 2128640, 3299392, 4124240, 6598784, 8248480, 13197568, 16496960, 32993920, 65987840]

約数ペア:

[(1, 65987840), (2, 32993920), (4, 16496960), (5, 13197568), (8, 8248480), (10, 6598784), (16, 4124240), (20, 3299392), (31, 2128640), (32, 2062120), (40, 1649696), (62, 1064320), (64, 1031060), (80, 824848), (124, 532160), (128, 515530), (155, 425728), (160, 412424), (248, 266080), (256, 257765), (310, 212864), (320, 206212), (496, 133040), (620, 106432), (640, 103106), (992, 66520), (1240, 53216), (1280, 51553), (1663, 39680), (1984, 33260), (2480, 26608), (3326, 19840), (3968, 16630), (4960, 13304), (6652, 9920), (7936, 8315)]