20189979

素因数分解:

$3^4\times {\mathrm{53}}^1\times {\mathrm{4703}}^1$

素因数の和:4768

約数の個数: 20

約数和(自身を含む): 30735936

約数和(自身を除く): 10545957

約数列:

[1, 3, 9, 27, 53, 81, 159, 477, 1431, 4293, 4703, 14109, 42327, 126981, 249259, 380943, 747777, 2243331, 6729993, 20189979]

約数ペア:

[(1, 20189979), (3, 6729993), (9, 2243331), (27, 747777), (53, 380943), (81, 249259), (159, 126981), (477, 42327), (1431, 14109), (4293, 4703)]