217989855

素因数分解:

$3^2\times 5^1\times {\mathrm{353}}^1\times {\mathrm{13723}}^1$

素因数の和:14087

約数の個数: 24

約数和(自身を含む): 378947088

約数和(自身を除く): 160957233

約数列:

[1, 3, 5, 9, 15, 45, 353, 1059, 1765, 3177, 5295, 13723, 15885, 41169, 68615, 123507, 205845, 617535, 4844219, 14532657, 24221095, 43597971, 72663285, 217989855]

約数ペア:

[(1, 217989855), (3, 72663285), (5, 43597971), (9, 24221095), (15, 14532657), (45, 4844219), (353, 617535), (1059, 205845), (1765, 123507), (3177, 68615), (5295, 41169), (13723, 15885)]