21492705

素因数分解:

$3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{5801}}^1$

素因数の和:5841

約数の個数: 32

約数和(自身を含む): 38989440

約数和(自身を除く): 17496735

約数列:

[1, 3, 5, 13, 15, 19, 39, 57, 65, 95, 195, 247, 285, 741, 1235, 3705, 5801, 17403, 29005, 75413, 87015, 110219, 226239, 330657, 377065, 551095, 1131195, 1432847, 1653285, 4298541, 7164235, 21492705]

約数ペア:

[(1, 21492705), (3, 7164235), (5, 4298541), (13, 1653285), (15, 1432847), (19, 1131195), (39, 551095), (57, 377065), (65, 330657), (95, 226239), (195, 110219), (247, 87015), (285, 75413), (741, 29005), (1235, 17403), (3705, 5801)]