217207905

素因数分解:

$3^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{661}}^1\times {\mathrm{1153}}^1$

素因数の和:1841

約数の個数: 32

約数和(自身を含む): 366695040

約数和(自身を除く): 149487135

約数列:

[1, 3, 5, 15, 19, 57, 95, 285, 661, 1153, 1983, 3305, 3459, 5765, 9915, 12559, 17295, 21907, 37677, 62795, 65721, 109535, 188385, 328605, 762133, 2286399, 3810665, 11431995, 14480527, 43441581, 72402635, 217207905]

約数ペア:

[(1, 217207905), (3, 72402635), (5, 43441581), (15, 14480527), (19, 11431995), (57, 3810665), (95, 2286399), (285, 762133), (661, 328605), (1153, 188385), (1983, 109535), (3305, 65721), (3459, 62795), (5765, 37677), (9915, 21907), (12559, 17295)]