1618444820

素因数分解:

$2^2\times 5^1\times {\mathrm{127}}^1\times {\mathrm{521}}^1\times {\mathrm{1223}}^1$

素因数の和:1880

約数の個数: 48

約数和(自身を含む): 3434876928

約数和(自身を除く): 1816432108

約数列:

[1, 2, 4, 5, 10, 20, 127, 254, 508, 521, 635, 1042, 1223, 1270, 2084, 2446, 2540, 2605, 4892, 5210, 6115, 10420, 12230, 24460, 66167, 132334, 155321, 264668, 310642, 330835, 621284, 637183, 661670, 776605, 1274366, 1323340, 1553210, 2548732, 3106420, 3185915, 6371830, 12743660, 80922241, 161844482, 323688964, 404611205, 809222410, 1618444820]

約数ペア:

[(1, 1618444820), (2, 809222410), (4, 404611205), (5, 323688964), (10, 161844482), (20, 80922241), (127, 12743660), (254, 6371830), (508, 3185915), (521, 3106420), (635, 2548732), (1042, 1553210), (1223, 1323340), (1270, 1274366), (2084, 776605), (2446, 661670), (2540, 637183), (2605, 621284), (4892, 330835), (5210, 310642), (6115, 264668), (10420, 155321), (12230, 132334), (24460, 66167)]