81382640

素因数分解:

$2^4\times 5^1\times {\mathrm{79}}^2\times {\mathrm{163}}^1$

素因数の和:334

約数の個数: 60

約数和(自身を含む): 192815784

約数和(自身を除く): 111433144

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 79, 80, 158, 163, 316, 326, 395, 632, 652, 790, 815, 1264, 1304, 1580, 1630, 2608, 3160, 3260, 6241, 6320, 6520, 12482, 12877, 13040, 24964, 25754, 31205, 49928, 51508, 62410, 64385, 99856, 103016, 124820, 128770, 206032, 249640, 257540, 499280, 515080, 1017283, 1030160, 2034566, 4069132, 5086415, 8138264, 10172830, 16276528, 20345660, 40691320, 81382640]

約数ペア:

[(1, 81382640), (2, 40691320), (4, 20345660), (5, 16276528), (8, 10172830), (10, 8138264), (16, 5086415), (20, 4069132), (40, 2034566), (79, 1030160), (80, 1017283), (158, 515080), (163, 499280), (316, 257540), (326, 249640), (395, 206032), (632, 128770), (652, 124820), (790, 103016), (815, 99856), (1264, 64385), (1304, 62410), (1580, 51508), (1630, 49928), (2608, 31205), (3160, 25754), (3260, 24964), (6241, 13040), (6320, 12877), (6520, 12482)]