256740

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{389}}^1$

素因数の和:412

約数の個数: 48

約数和(自身を含む): 786240

約数和(自身を除く): 529500

約数列:

[1, 2, 3, 4, 5, 6, 10, 11, 12, 15, 20, 22, 30, 33, 44, 55, 60, 66, 110, 132, 165, 220, 330, 389, 660, 778, 1167, 1556, 1945, 2334, 3890, 4279, 4668, 5835, 7780, 8558, 11670, 12837, 17116, 21395, 23340, 25674, 42790, 51348, 64185, 85580, 128370, 256740]

約数ペア:

[(1, 256740), (2, 128370), (3, 85580), (4, 64185), (5, 51348), (6, 42790), (10, 25674), (11, 23340), (12, 21395), (15, 17116), (20, 12837), (22, 11670), (30, 8558), (33, 7780), (44, 5835), (55, 4668), (60, 4279), (66, 3890), (110, 2334), (132, 1945), (165, 1556), (220, 1167), (330, 778), (389, 660)]