209990885

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{29}}^1\times {\mathrm{6553}}^1$

素因数の和:6617

約数の個数: 32

約数和(自身を含む): 297289440

約数和(自身を除く): 87298555

約数列:

[1, 5, 13, 17, 29, 65, 85, 145, 221, 377, 493, 1105, 1885, 2465, 6409, 6553, 32045, 32765, 85189, 111401, 190037, 425945, 557005, 950185, 1448213, 2470481, 3230629, 7241065, 12352405, 16153145, 41998177, 209990885]

約数ペア:

[(1, 209990885), (5, 41998177), (13, 16153145), (17, 12352405), (29, 7241065), (65, 3230629), (85, 2470481), (145, 1448213), (221, 950185), (377, 557005), (493, 425945), (1105, 190037), (1885, 111401), (2465, 85189), (6409, 32765), (6553, 32045)]