21204795

素因数分解:

$3^1\times 5^1\times {\mathrm{383}}^1\times {\mathrm{3691}}^1$

素因数の和:4082

約数の個数: 16

約数和(自身を含む): 34025472

約数和(自身を除く): 12820677

約数列:

[1, 3, 5, 15, 383, 1149, 1915, 3691, 5745, 11073, 18455, 55365, 1413653, 4240959, 7068265, 21204795]

約数ペア:

[(1, 21204795), (3, 7068265), (5, 4240959), (15, 1413653), (383, 55365), (1149, 18455), (1915, 11073), (3691, 5745)]