18371960

素因数分解:

$2^3\times 5^1\times {\mathrm{71}}^1\times {\mathrm{6469}}^1$

素因数の和:6551

約数の個数: 32

約数和(自身を含む): 41925600

約数和(自身を除く): 23553640

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 71, 142, 284, 355, 568, 710, 1420, 2840, 6469, 12938, 25876, 32345, 51752, 64690, 129380, 258760, 459299, 918598, 1837196, 2296495, 3674392, 4592990, 9185980, 18371960]

約数ペア:

[(1, 18371960), (2, 9185980), (4, 4592990), (5, 3674392), (8, 2296495), (10, 1837196), (20, 918598), (40, 459299), (71, 258760), (142, 129380), (284, 64690), (355, 51752), (568, 32345), (710, 25876), (1420, 12938), (2840, 6469)]