20818408

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{200177}}^1$

素因数の和:200196

約数の個数: 16

約数和(自身を含む): 42037380

約数和(自身を除く): 21218972

約数列:

[1, 2, 4, 8, 13, 26, 52, 104, 200177, 400354, 800708, 1601416, 2602301, 5204602, 10409204, 20818408]

約数ペア:

[(1, 20818408), (2, 10409204), (4, 5204602), (8, 2602301), (13, 1601416), (26, 800708), (52, 400354), (104, 200177)]