556362820

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{2139857}}^1$

素因数の和:2139879

約数の個数: 24

約数和(自身を含む): 1258236504

約数和(自身を除く): 701873684

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 2139857, 4279714, 8559428, 10699285, 21398570, 27818141, 42797140, 55636282, 111272564, 139090705, 278181410, 556362820]

約数ペア:

[(1, 556362820), (2, 278181410), (4, 139090705), (5, 111272564), (10, 55636282), (13, 42797140), (20, 27818141), (26, 21398570), (52, 10699285), (65, 8559428), (130, 4279714), (260, 2139857)]