31281640

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{1399}}^1$

素因数の和:1466

約数の個数: 64

約数和(自身を含む): 77616000

約数和(自身を除く): 46334360

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 43, 52, 65, 86, 104, 130, 172, 215, 260, 344, 430, 520, 559, 860, 1118, 1399, 1720, 2236, 2795, 2798, 4472, 5590, 5596, 6995, 11180, 11192, 13990, 18187, 22360, 27980, 36374, 55960, 60157, 72748, 90935, 120314, 145496, 181870, 240628, 300785, 363740, 481256, 601570, 727480, 782041, 1203140, 1564082, 2406280, 3128164, 3910205, 6256328, 7820410, 15640820, 31281640]

約数ペア:

[(1, 31281640), (2, 15640820), (4, 7820410), (5, 6256328), (8, 3910205), (10, 3128164), (13, 2406280), (20, 1564082), (26, 1203140), (40, 782041), (43, 727480), (52, 601570), (65, 481256), (86, 363740), (104, 300785), (130, 240628), (172, 181870), (215, 145496), (260, 120314), (344, 90935), (430, 72748), (520, 60157), (559, 55960), (860, 36374), (1118, 27980), (1399, 22360), (1720, 18187), (2236, 13990), (2795, 11192), (2798, 11180), (4472, 6995), (5590, 5596)]