21660551

素因数分解:

${\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{61}}^1\times {\mathrm{1699}}^1$

素因数の和:1790

約数の個数: 16

約数和(自身を含む): 25296000

約数和(自身を除く): 3635449

約数列:

[1, 11, 19, 61, 209, 671, 1159, 1699, 12749, 18689, 32281, 103639, 355091, 1140029, 1969141, 21660551]

約数ペア:

[(1, 21660551), (11, 1969141), (19, 1140029), (61, 355091), (209, 103639), (671, 32281), (1159, 18689), (1699, 12749)]