18709940

素因数分解:

$2^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{22817}}^1$

素因数の和:22867

約数の個数: 24

約数和(自身を含む): 40250952

約数和(自身を除く): 21541012

約数列:

[1, 2, 4, 5, 10, 20, 41, 82, 164, 205, 410, 820, 22817, 45634, 91268, 114085, 228170, 456340, 935497, 1870994, 3741988, 4677485, 9354970, 18709940]

約数ペア:

[(1, 18709940), (2, 9354970), (4, 4677485), (5, 3741988), (10, 1870994), (20, 935497), (41, 456340), (82, 228170), (164, 114085), (205, 91268), (410, 45634), (820, 22817)]