21232065

素因数分解:

$3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{53}}^1\times {\mathrm{1571}}^1$

素因数の和:1649

約数の個数: 32

約数和(自身を含む): 36671616

約数和(自身を除く): 15439551

約数列:

[1, 3, 5, 15, 17, 51, 53, 85, 159, 255, 265, 795, 901, 1571, 2703, 4505, 4713, 7855, 13515, 23565, 26707, 80121, 83263, 133535, 249789, 400605, 416315, 1248945, 1415471, 4246413, 7077355, 21232065]

約数ペア:

[(1, 21232065), (3, 7077355), (5, 4246413), (15, 1415471), (17, 1248945), (51, 416315), (53, 400605), (85, 249789), (159, 133535), (255, 83263), (265, 80121), (795, 26707), (901, 23565), (1571, 13515), (2703, 7855), (4505, 4713)]