85170640

素因数分解:

$2^4\times 5^1\times {\mathrm{31}}^1\times {\mathrm{61}}^1\times {\mathrm{563}}^1$

素因数の和:668

約数の個数: 80

約数和(自身を含む): 208129536

約数和(自身を除く): 122958896

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 40, 61, 62, 80, 122, 124, 155, 244, 248, 305, 310, 488, 496, 563, 610, 620, 976, 1126, 1220, 1240, 1891, 2252, 2440, 2480, 2815, 3782, 4504, 4880, 5630, 7564, 9008, 9455, 11260, 15128, 17453, 18910, 22520, 30256, 34343, 34906, 37820, 45040, 68686, 69812, 75640, 87265, 137372, 139624, 151280, 171715, 174530, 274744, 279248, 343430, 349060, 549488, 686860, 698120, 1064633, 1373720, 1396240, 2129266, 2747440, 4258532, 5323165, 8517064, 10646330, 17034128, 21292660, 42585320, 85170640]

約数ペア:

[(1, 85170640), (2, 42585320), (4, 21292660), (5, 17034128), (8, 10646330), (10, 8517064), (16, 5323165), (20, 4258532), (31, 2747440), (40, 2129266), (61, 1396240), (62, 1373720), (80, 1064633), (122, 698120), (124, 686860), (155, 549488), (244, 349060), (248, 343430), (305, 279248), (310, 274744), (488, 174530), (496, 171715), (563, 151280), (610, 139624), (620, 137372), (976, 87265), (1126, 75640), (1220, 69812), (1240, 68686), (1891, 45040), (2252, 37820), (2440, 34906), (2480, 34343), (2815, 30256), (3782, 22520), (4504, 18910), (4880, 17453), (5630, 15128), (7564, 11260), (9008, 9455)]