87395620

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{157}}^1\times {\mathrm{2141}}^1$

素因数の和:2320

約数の個数: 48

約数和(自身を含む): 199000368

約数和(自身を除く): 111604748

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 157, 260, 314, 628, 785, 1570, 2041, 2141, 3140, 4082, 4282, 8164, 8564, 10205, 10705, 20410, 21410, 27833, 40820, 42820, 55666, 111332, 139165, 278330, 336137, 556660, 672274, 1344548, 1680685, 3361370, 4369781, 6722740, 8739562, 17479124, 21848905, 43697810, 87395620]

約数ペア:

[(1, 87395620), (2, 43697810), (4, 21848905), (5, 17479124), (10, 8739562), (13, 6722740), (20, 4369781), (26, 3361370), (52, 1680685), (65, 1344548), (130, 672274), (157, 556660), (260, 336137), (314, 278330), (628, 139165), (785, 111332), (1570, 55666), (2041, 42820), (2141, 40820), (3140, 27833), (4082, 21410), (4282, 20410), (8164, 10705), (8564, 10205)]