20598705

素因数分解:

$3^4\times 5^1\times {\mathrm{181}}^1\times {\mathrm{281}}^1$

素因数の和:479

約数の個数: 40

約数和(自身を含む): 37261224

約数和(自身を除く): 16662519

約数列:

[1, 3, 5, 9, 15, 27, 45, 81, 135, 181, 281, 405, 543, 843, 905, 1405, 1629, 2529, 2715, 4215, 4887, 7587, 8145, 12645, 14661, 22761, 24435, 37935, 50861, 73305, 113805, 152583, 254305, 457749, 762915, 1373247, 2288745, 4119741, 6866235, 20598705]

約数ペア:

[(1, 20598705), (3, 6866235), (5, 4119741), (9, 2288745), (15, 1373247), (27, 762915), (45, 457749), (81, 254305), (135, 152583), (181, 113805), (281, 73305), (405, 50861), (543, 37935), (843, 24435), (905, 22761), (1405, 14661), (1629, 12645), (2529, 8145), (2715, 7587), (4215, 4887)]