210905695

素因数分解:

$5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{42139}}^1$

素因数の和:42175

約数の個数: 32

約数和(自身を含む): 339816960

約数和(自身を除く): 128911265

約数列:

[1, 5, 7, 11, 13, 35, 55, 65, 77, 91, 143, 385, 455, 715, 1001, 5005, 42139, 210695, 294973, 463529, 547807, 1474865, 2317645, 2739035, 3244703, 3834649, 6025877, 16223515, 19173245, 30129385, 42181139, 210905695]

約数ペア:

[(1, 210905695), (5, 42181139), (7, 30129385), (11, 19173245), (13, 16223515), (35, 6025877), (55, 3834649), (65, 3244703), (77, 2739035), (91, 2317645), (143, 1474865), (385, 547807), (455, 463529), (715, 294973), (1001, 210695), (5005, 42139)]