21957525

素因数分解:

$3^2\times 5^2\times {\mathrm{23}}^1\times {\mathrm{4243}}^1$

素因数の和:4282

約数の個数: 36

約数和(自身を含む): 41047968

約数和(自身を除く): 19090443

約数列:

[1, 3, 5, 9, 15, 23, 25, 45, 69, 75, 115, 207, 225, 345, 575, 1035, 1725, 4243, 5175, 12729, 21215, 38187, 63645, 97589, 106075, 190935, 292767, 318225, 487945, 878301, 954675, 1463835, 2439725, 4391505, 7319175, 21957525]

約数ペア:

[(1, 21957525), (3, 7319175), (5, 4391505), (9, 2439725), (15, 1463835), (23, 954675), (25, 878301), (45, 487945), (69, 318225), (75, 292767), (115, 190935), (207, 106075), (225, 97589), (345, 63645), (575, 38187), (1035, 21215), (1725, 12729), (4243, 5175)]