19893080

素因数分解:

$2^3\times 5^1\times {\mathrm{211}}^1\times {\mathrm{2357}}^1$

素因数の和:2579

約数の個数: 32

約数和(自身を含む): 44990640

約数和(自身を除く): 25097560

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 211, 422, 844, 1055, 1688, 2110, 2357, 4220, 4714, 8440, 9428, 11785, 18856, 23570, 47140, 94280, 497327, 994654, 1989308, 2486635, 3978616, 4973270, 9946540, 19893080]

約数ペア:

[(1, 19893080), (2, 9946540), (4, 4973270), (5, 3978616), (8, 2486635), (10, 1989308), (20, 994654), (40, 497327), (211, 94280), (422, 47140), (844, 23570), (1055, 18856), (1688, 11785), (2110, 9428), (2357, 8440), (4220, 4714)]