20108165

素因数分解:

$5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{29}}^1\times {\mathrm{1801}}^1$

素因数の和:1853

約数の個数: 32

約数和(自身を含む): 31138560

約数和(自身を除く): 11030395

約数列:

[1, 5, 7, 11, 29, 35, 55, 77, 145, 203, 319, 385, 1015, 1595, 1801, 2233, 9005, 11165, 12607, 19811, 52229, 63035, 99055, 138677, 261145, 365603, 574519, 693385, 1828015, 2872595, 4021633, 20108165]

約数ペア:

[(1, 20108165), (5, 4021633), (7, 2872595), (11, 1828015), (29, 693385), (35, 574519), (55, 365603), (77, 261145), (145, 138677), (203, 99055), (319, 63035), (385, 52229), (1015, 19811), (1595, 12607), (1801, 11165), (2233, 9005)]