20720685

素因数分解:

$3^1\times 5^1\times {\mathrm{73}}^1\times {\mathrm{127}}^1\times {\mathrm{149}}^1$

素因数の和:357

約数の個数: 32

約数和(自身を含む): 34099200

約数和(自身を除く): 13378515

約数列:

[1, 3, 5, 15, 73, 127, 149, 219, 365, 381, 447, 635, 745, 1095, 1905, 2235, 9271, 10877, 18923, 27813, 32631, 46355, 54385, 56769, 94615, 139065, 163155, 283845, 1381379, 4144137, 6906895, 20720685]

約数ペア:

[(1, 20720685), (3, 6906895), (5, 4144137), (15, 1381379), (73, 283845), (127, 163155), (149, 139065), (219, 94615), (365, 56769), (381, 54385), (447, 46355), (635, 32631), (745, 27813), (1095, 18923), (1905, 10877), (2235, 9271)]