21555420

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{101}}^1\times {\mathrm{3557}}^1$

素因数の和:3670

約数の個数: 48

約数和(自身を含む): 60969888

約数和(自身を除く): 39414468

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 101, 202, 303, 404, 505, 606, 1010, 1212, 1515, 2020, 3030, 3557, 6060, 7114, 10671, 14228, 17785, 21342, 35570, 42684, 53355, 71140, 106710, 213420, 359257, 718514, 1077771, 1437028, 1796285, 2155542, 3592570, 4311084, 5388855, 7185140, 10777710, 21555420]

約数ペア:

[(1, 21555420), (2, 10777710), (3, 7185140), (4, 5388855), (5, 4311084), (6, 3592570), (10, 2155542), (12, 1796285), (15, 1437028), (20, 1077771), (30, 718514), (60, 359257), (101, 213420), (202, 106710), (303, 71140), (404, 53355), (505, 42684), (606, 35570), (1010, 21342), (1212, 17785), (1515, 14228), (2020, 10671), (3030, 7114), (3557, 6060)]