21580364

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{89}}^1\times {\mathrm{4663}}^1$

素因数の和:4769

約数の個数: 24

約数和(自身を含む): 41136480

約数和(自身を除く): 19556116

約数列:

[1, 2, 4, 13, 26, 52, 89, 178, 356, 1157, 2314, 4628, 4663, 9326, 18652, 60619, 121238, 242476, 415007, 830014, 1660028, 5395091, 10790182, 21580364]

約数ペア:

[(1, 21580364), (2, 10790182), (4, 5395091), (13, 1660028), (26, 830014), (52, 415007), (89, 242476), (178, 121238), (356, 60619), (1157, 18652), (2314, 9326), (4628, 4663)]