77987320

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{109}}^1\times {\mathrm{577}}^1$

素因数の和:728

約数の個数: 64

約数和(自身を含む): 183110400

約数和(自身を除く): 105123080

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 40, 62, 109, 124, 155, 218, 248, 310, 436, 545, 577, 620, 872, 1090, 1154, 1240, 2180, 2308, 2885, 3379, 4360, 4616, 5770, 6758, 11540, 13516, 16895, 17887, 23080, 27032, 33790, 35774, 62893, 67580, 71548, 89435, 125786, 135160, 143096, 178870, 251572, 314465, 357740, 503144, 628930, 715480, 1257860, 1949683, 2515720, 3899366, 7798732, 9748415, 15597464, 19496830, 38993660, 77987320]

約数ペア:

[(1, 77987320), (2, 38993660), (4, 19496830), (5, 15597464), (8, 9748415), (10, 7798732), (20, 3899366), (31, 2515720), (40, 1949683), (62, 1257860), (109, 715480), (124, 628930), (155, 503144), (218, 357740), (248, 314465), (310, 251572), (436, 178870), (545, 143096), (577, 135160), (620, 125786), (872, 89435), (1090, 71548), (1154, 67580), (1240, 62893), (2180, 35774), (2308, 33790), (2885, 27032), (3379, 23080), (4360, 17887), (4616, 16895), (5770, 13516), (6758, 11540)]