239281640

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{460157}}^1$

素因数の和:460181

約数の個数: 32

約数和(自身を含む): 579799080

約数和(自身を除く): 340517440

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 260, 520, 460157, 920314, 1840628, 2300785, 3681256, 4601570, 5982041, 9203140, 11964082, 18406280, 23928164, 29910205, 47856328, 59820410, 119640820, 239281640]

約数ペア:

[(1, 239281640), (2, 119640820), (4, 59820410), (5, 47856328), (8, 29910205), (10, 23928164), (13, 18406280), (20, 11964082), (26, 9203140), (40, 5982041), (52, 4601570), (65, 3681256), (104, 2300785), (130, 1840628), (260, 920314), (520, 460157)]