21811647

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{13}}^2\times {\mathrm{3911}}^1$

素因数の和:3951

約数の個数: 24

約数和(自身を含む): 34363008

約数和(自身を除く): 12551361

約数列:

[1, 3, 11, 13, 33, 39, 143, 169, 429, 507, 1859, 3911, 5577, 11733, 43021, 50843, 129063, 152529, 559273, 660959, 1677819, 1982877, 7270549, 21811647]

約数ペア:

[(1, 21811647), (3, 7270549), (11, 1982877), (13, 1677819), (33, 660959), (39, 559273), (143, 152529), (169, 129063), (429, 50843), (507, 43021), (1859, 11733), (3911, 5577)]