20925045

素因数分解:

$3^2\times 5^1\times {\mathrm{17}}^2\times {\mathrm{1609}}^1$

素因数の和:1654

約数の個数: 36

約数和(自身を含む): 38553060

約数和(自身を除く): 17628015

約数列:

[1, 3, 5, 9, 15, 17, 45, 51, 85, 153, 255, 289, 765, 867, 1445, 1609, 2601, 4335, 4827, 8045, 13005, 14481, 24135, 27353, 72405, 82059, 136765, 246177, 410295, 465001, 1230885, 1395003, 2325005, 4185009, 6975015, 20925045]

約数ペア:

[(1, 20925045), (3, 6975015), (5, 4185009), (9, 2325005), (15, 1395003), (17, 1230885), (45, 465001), (51, 410295), (85, 246177), (153, 136765), (255, 82059), (289, 72405), (765, 27353), (867, 24135), (1445, 14481), (1609, 13005), (2601, 8045), (4335, 4827)]