18986835

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{211}}^1\times {\mathrm{857}}^1$

素因数の和:1083

約数の個数: 32

約数和(自身を含む): 34924032

約数和(自身を除く): 15937197

約数列:

[1, 3, 5, 7, 15, 21, 35, 105, 211, 633, 857, 1055, 1477, 2571, 3165, 4285, 4431, 5999, 7385, 12855, 17997, 22155, 29995, 89985, 180827, 542481, 904135, 1265789, 2712405, 3797367, 6328945, 18986835]

約数ペア:

[(1, 18986835), (3, 6328945), (5, 3797367), (7, 2712405), (15, 1265789), (21, 904135), (35, 542481), (105, 180827), (211, 89985), (633, 29995), (857, 22155), (1055, 17997), (1477, 12855), (2571, 7385), (3165, 5999), (4285, 4431)]