161031880

素因数分解:

$2^3\times 5^1\times {\mathrm{4025797}}^1$

素因数の和:4025808

約数の個数: 16

約数和(自身を含む): 362321820

約数和(自身を除く): 201289940

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 4025797, 8051594, 16103188, 20128985, 32206376, 40257970, 80515940, 161031880]

約数ペア:

[(1, 161031880), (2, 80515940), (4, 40257970), (5, 32206376), (8, 20128985), (10, 16103188), (20, 8051594), (40, 4025797)]