216464815

素因数分解:

$5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{163}}^1\times {\mathrm{1997}}^1$

素因数の和:2191

約数の個数: 32

約数和(自身を含む): 314565120

約数和(自身を除く): 98100305

約数列:

[1, 5, 7, 19, 35, 95, 133, 163, 665, 815, 1141, 1997, 3097, 5705, 9985, 13979, 15485, 21679, 37943, 69895, 108395, 189715, 265601, 325511, 1328005, 1627555, 2278577, 6184709, 11392885, 30923545, 43292963, 216464815]

約数ペア:

[(1, 216464815), (5, 43292963), (7, 30923545), (19, 11392885), (35, 6184709), (95, 2278577), (133, 1627555), (163, 1328005), (665, 325511), (815, 265601), (1141, 189715), (1997, 108395), (3097, 69895), (5705, 37943), (9985, 21679), (13979, 15485)]