20357289

素因数分解:

$3^2\times {\mathrm{37}}^1\times {\mathrm{113}}^1\times {\mathrm{541}}^1$

素因数の和:697

約数の個数: 24

約数和(自身を含む): 30523272

約数和(自身を除く): 10165983

約数列:

[1, 3, 9, 37, 111, 113, 333, 339, 541, 1017, 1623, 4181, 4869, 12543, 20017, 37629, 60051, 61133, 180153, 183399, 550197, 2261921, 6785763, 20357289]

約数ペア:

[(1, 20357289), (3, 6785763), (9, 2261921), (37, 550197), (111, 183399), (113, 180153), (333, 61133), (339, 60051), (541, 37629), (1017, 20017), (1623, 12543), (4181, 4869)]