18870440

素因数分解:

$2^3\times 5^1\times {\mathrm{283}}^1\times {\mathrm{1667}}^1$

素因数の和:1961

約数の個数: 32

約数和(自身を含む): 42634080

約数和(自身を除く): 23763640

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 283, 566, 1132, 1415, 1667, 2264, 2830, 3334, 5660, 6668, 8335, 11320, 13336, 16670, 33340, 66680, 471761, 943522, 1887044, 2358805, 3774088, 4717610, 9435220, 18870440]

約数ペア:

[(1, 18870440), (2, 9435220), (4, 4717610), (5, 3774088), (8, 2358805), (10, 1887044), (20, 943522), (40, 471761), (283, 66680), (566, 33340), (1132, 16670), (1415, 13336), (1667, 11320), (2264, 8335), (2830, 6668), (3334, 5660)]