21415790

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^3\times {\mathrm{1609}}^1$

素因数の和:1649

約数の個数: 32

約数和(自身を含む): 42426720

約数和(自身を除く): 21010930

約数列:

[1, 2, 5, 10, 11, 22, 55, 110, 121, 242, 605, 1210, 1331, 1609, 2662, 3218, 6655, 8045, 13310, 16090, 17699, 35398, 88495, 176990, 194689, 389378, 973445, 1946890, 2141579, 4283158, 10707895, 21415790]

約数ペア:

[(1, 21415790), (2, 10707895), (5, 4283158), (10, 2141579), (11, 1946890), (22, 973445), (55, 389378), (110, 194689), (121, 176990), (242, 88495), (605, 35398), (1210, 17699), (1331, 16090), (1609, 13310), (2662, 8045), (3218, 6655)]