21497559

素因数分解:

$3^1\times {\mathrm{61}}^1\times {\mathrm{79}}^1\times {\mathrm{1487}}^1$

素因数の和:1630

約数の個数: 16

約数和(自身を含む): 29521920

約数和(自身を除く): 8024361

約数列:

[1, 3, 61, 79, 183, 237, 1487, 4461, 4819, 14457, 90707, 117473, 272121, 352419, 7165853, 21497559]

約数ペア:

[(1, 21497559), (3, 7165853), (61, 352419), (79, 272121), (183, 117473), (237, 90707), (1487, 14457), (4461, 4819)]