20643075

素因数分解:

$3^2\times 5^2\times {\mathrm{23}}^1\times {\mathrm{3989}}^1$

素因数の和:4028

約数の個数: 36

約数和(自身を含む): 38591280

約数和(自身を除く): 17948205

約数列:

[1, 3, 5, 9, 15, 23, 25, 45, 69, 75, 115, 207, 225, 345, 575, 1035, 1725, 3989, 5175, 11967, 19945, 35901, 59835, 91747, 99725, 179505, 275241, 299175, 458735, 825723, 897525, 1376205, 2293675, 4128615, 6881025, 20643075]

約数ペア:

[(1, 20643075), (3, 6881025), (5, 4128615), (9, 2293675), (15, 1376205), (23, 897525), (25, 825723), (45, 458735), (69, 299175), (75, 275241), (115, 179505), (207, 99725), (225, 91747), (345, 59835), (575, 35901), (1035, 19945), (1725, 11967), (3989, 5175)]