21335325

素因数分解:

$3^1\times 5^2\times {\mathrm{11}}^2\times {\mathrm{2351}}^1$

素因数の和:2386

約数の個数: 36

約数和(自身を含む): 38789184

約数和(自身を除く): 17453859

約数列:

[1, 3, 5, 11, 15, 25, 33, 55, 75, 121, 165, 275, 363, 605, 825, 1815, 2351, 3025, 7053, 9075, 11755, 25861, 35265, 58775, 77583, 129305, 176325, 284471, 387915, 646525, 853413, 1422355, 1939575, 4267065, 7111775, 21335325]

約数ペア:

[(1, 21335325), (3, 7111775), (5, 4267065), (11, 1939575), (15, 1422355), (25, 853413), (33, 646525), (55, 387915), (75, 284471), (121, 176325), (165, 129305), (275, 77583), (363, 58775), (605, 35265), (825, 25861), (1815, 11755), (2351, 9075), (3025, 7053)]