66155660

素因数分解:

$2^2\times 5^1\times {\mathrm{53}}^1\times {\mathrm{139}}^1\times {\mathrm{449}}^1$

素因数の和:650

約数の個数: 48

約数和(自身を含む): 142884000

約数和(自身を除く): 76728340

約数列:

[1, 2, 4, 5, 10, 20, 53, 106, 139, 212, 265, 278, 449, 530, 556, 695, 898, 1060, 1390, 1796, 2245, 2780, 4490, 7367, 8980, 14734, 23797, 29468, 36835, 47594, 62411, 73670, 95188, 118985, 124822, 147340, 237970, 249644, 312055, 475940, 624110, 1248220, 3307783, 6615566, 13231132, 16538915, 33077830, 66155660]

約数ペア:

[(1, 66155660), (2, 33077830), (4, 16538915), (5, 13231132), (10, 6615566), (20, 3307783), (53, 1248220), (106, 624110), (139, 475940), (212, 312055), (265, 249644), (278, 237970), (449, 147340), (530, 124822), (556, 118985), (695, 95188), (898, 73670), (1060, 62411), (1390, 47594), (1796, 36835), (2245, 29468), (2780, 23797), (4490, 14734), (7367, 8980)]