72394820

素因数分解:

$2^2\times 5^1\times {\mathrm{53}}^1\times {\mathrm{163}}^1\times {\mathrm{419}}^1$

素因数の和:644

約数の個数: 48

約数和(自身を含む): 156219840

約数和(自身を除く): 83825020

約数列:

[1, 2, 4, 5, 10, 20, 53, 106, 163, 212, 265, 326, 419, 530, 652, 815, 838, 1060, 1630, 1676, 2095, 3260, 4190, 8380, 8639, 17278, 22207, 34556, 43195, 44414, 68297, 86390, 88828, 111035, 136594, 172780, 222070, 273188, 341485, 444140, 682970, 1365940, 3619741, 7239482, 14478964, 18098705, 36197410, 72394820]

約数ペア:

[(1, 72394820), (2, 36197410), (4, 18098705), (5, 14478964), (10, 7239482), (20, 3619741), (53, 1365940), (106, 682970), (163, 444140), (212, 341485), (265, 273188), (326, 222070), (419, 172780), (530, 136594), (652, 111035), (815, 88828), (838, 86390), (1060, 68297), (1630, 44414), (1676, 43195), (2095, 34556), (3260, 22207), (4190, 17278), (8380, 8639)]