18841420

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{72467}}^1$

素因数の和:72489

約数の個数: 24

約数和(自身を含む): 42611184

約数和(自身を除く): 23769764

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 72467, 144934, 289868, 362335, 724670, 942071, 1449340, 1884142, 3768284, 4710355, 9420710, 18841420]

約数ペア:

[(1, 18841420), (2, 9420710), (4, 4710355), (5, 3768284), (10, 1884142), (13, 1449340), (20, 942071), (26, 724670), (52, 362335), (65, 289868), (130, 144934), (260, 72467)]