19251640

素因数分解:

$2^3\times 5^1\times {\mathrm{211}}^1\times {\mathrm{2281}}^1$

素因数の和:2503

約数の個数: 32

約数和(自身を含む): 43540560

約数和(自身を除く): 24288920

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 211, 422, 844, 1055, 1688, 2110, 2281, 4220, 4562, 8440, 9124, 11405, 18248, 22810, 45620, 91240, 481291, 962582, 1925164, 2406455, 3850328, 4812910, 9625820, 19251640]

約数ペア:

[(1, 19251640), (2, 9625820), (4, 4812910), (5, 3850328), (8, 2406455), (10, 1925164), (20, 962582), (40, 481291), (211, 91240), (422, 45620), (844, 22810), (1055, 18248), (1688, 11405), (2110, 9124), (2281, 8440), (4220, 4562)]