20258985

素因数分解:

$3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{53}}^1\times {\mathrm{1499}}^1$

素因数の和:1577

約数の個数: 32

約数和(自身を含む): 34992000

約数和(自身を除く): 14733015

約数列:

[1, 3, 5, 15, 17, 51, 53, 85, 159, 255, 265, 795, 901, 1499, 2703, 4497, 4505, 7495, 13515, 22485, 25483, 76449, 79447, 127415, 238341, 382245, 397235, 1191705, 1350599, 4051797, 6752995, 20258985]

約数ペア:

[(1, 20258985), (3, 6752995), (5, 4051797), (15, 1350599), (17, 1191705), (51, 397235), (53, 382245), (85, 238341), (159, 127415), (255, 79447), (265, 76449), (795, 25483), (901, 22485), (1499, 13515), (2703, 7495), (4497, 4505)]