20420504

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{8537}}^1$

素因数の和:8579

約数の個数: 32

約数和(自身を含む): 43031520

約数和(自身を除く): 22611016

約数列:

[1, 2, 4, 8, 13, 23, 26, 46, 52, 92, 104, 184, 299, 598, 1196, 2392, 8537, 17074, 34148, 68296, 110981, 196351, 221962, 392702, 443924, 785404, 887848, 1570808, 2552563, 5105126, 10210252, 20420504]

約数ペア:

[(1, 20420504), (2, 10210252), (4, 5105126), (8, 2552563), (13, 1570808), (23, 887848), (26, 785404), (46, 443924), (52, 392702), (92, 221962), (104, 196351), (184, 110981), (299, 68296), (598, 34148), (1196, 17074), (2392, 8537)]