21529655

素因数分解:

$5^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{19843}}^1$

素因数の和:19886

約数の個数: 16

約数和(自身を含む): 30480384

約数和(自身を除く): 8950729

約数列:

[1, 5, 7, 31, 35, 155, 217, 1085, 19843, 99215, 138901, 615133, 694505, 3075665, 4305931, 21529655]

約数ペア:

[(1, 21529655), (5, 4305931), (7, 3075665), (31, 694505), (35, 615133), (155, 138901), (217, 99215), (1085, 19843)]