18881960

素因数分解:

$2^3\times 5^1\times {\mathrm{103}}^1\times {\mathrm{4583}}^1$

素因数の和:4697

約数の個数: 32

約数和(自身を含む): 42906240

約数和(自身を除く): 24024280

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 103, 206, 412, 515, 824, 1030, 2060, 4120, 4583, 9166, 18332, 22915, 36664, 45830, 91660, 183320, 472049, 944098, 1888196, 2360245, 3776392, 4720490, 9440980, 18881960]

約数ペア:

[(1, 18881960), (2, 9440980), (4, 4720490), (5, 3776392), (8, 2360245), (10, 1888196), (20, 944098), (40, 472049), (103, 183320), (206, 91660), (412, 45830), (515, 36664), (824, 22915), (1030, 18332), (2060, 9166), (4120, 4583)]