21473913

素因数分解:

$3^1\times {\mathrm{101}}^1\times {\mathrm{131}}^1\times {\mathrm{541}}^1$

素因数の和:776

約数の個数: 16

約数和(自身を含む): 29189952

約数和(自身を除く): 7716039

約数列:

[1, 3, 101, 131, 303, 393, 541, 1623, 13231, 39693, 54641, 70871, 163923, 212613, 7157971, 21473913]

約数ペア:

[(1, 21473913), (3, 7157971), (101, 212613), (131, 163923), (303, 70871), (393, 54641), (541, 39693), (1623, 13231)]