20640016

素因数分解:

$2^4\times {\mathrm{23}}^1\times {\mathrm{56087}}^1$

素因数の和:56118

約数の個数: 20

約数和(自身を含む): 41729472

約数和(自身を除く): 21089456

約数列:

[1, 2, 4, 8, 16, 23, 46, 92, 184, 368, 56087, 112174, 224348, 448696, 897392, 1290001, 2580002, 5160004, 10320008, 20640016]

約数ペア:

[(1, 20640016), (2, 10320008), (4, 5160004), (8, 2580002), (16, 1290001), (23, 897392), (46, 448696), (92, 224348), (184, 112174), (368, 56087)]