21661958

素因数分解:

$2^1\times {\mathrm{71}}^1\times {\mathrm{79}}^1\times {\mathrm{1931}}^1$

素因数の和:2083

約数の個数: 16

約数和(自身を含む): 33384960

約数和(自身を除く): 11723002

約数列:

[1, 2, 71, 79, 142, 158, 1931, 3862, 5609, 11218, 137101, 152549, 274202, 305098, 10830979, 21661958]

約数ペア:

[(1, 21661958), (2, 10830979), (71, 305098), (79, 274202), (142, 152549), (158, 137101), (1931, 11218), (3862, 5609)]