19420840

素因数分解:

$2^3\times 5^1\times {\mathrm{127}}^1\times {\mathrm{3823}}^1$

素因数の和:3961

約数の個数: 32

約数和(自身を含む): 44052480

約数和(自身を除く): 24631640

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 127, 254, 508, 635, 1016, 1270, 2540, 3823, 5080, 7646, 15292, 19115, 30584, 38230, 76460, 152920, 485521, 971042, 1942084, 2427605, 3884168, 4855210, 9710420, 19420840]

約数ペア:

[(1, 19420840), (2, 9710420), (4, 4855210), (5, 3884168), (8, 2427605), (10, 1942084), (20, 971042), (40, 485521), (127, 152920), (254, 76460), (508, 38230), (635, 30584), (1016, 19115), (1270, 15292), (2540, 7646), (3823, 5080)]