21683775

素因数分解:

$3^1\times 5^2\times {\mathrm{131}}^1\times {\mathrm{2207}}^1$

素因数の和:2351

約数の個数: 24

約数和(自身を含む): 36140544

約数和(自身を除く): 14456769

約数列:

[1, 3, 5, 15, 25, 75, 131, 393, 655, 1965, 2207, 3275, 6621, 9825, 11035, 33105, 55175, 165525, 289117, 867351, 1445585, 4336755, 7227925, 21683775]

約数ペア:

[(1, 21683775), (3, 7227925), (5, 4336755), (15, 1445585), (25, 867351), (75, 289117), (131, 165525), (393, 55175), (655, 33105), (1965, 11035), (2207, 9825), (3275, 6621)]