21677830

素因数分解:

$2^1\times 5^1\times {\mathrm{223}}^1\times {\mathrm{9721}}^1$

素因数の和:9951

約数の個数: 16

約数和(自身を含む): 39199104

約数和(自身を除く): 17521274

約数列:

[1, 2, 5, 10, 223, 446, 1115, 2230, 9721, 19442, 48605, 97210, 2167783, 4335566, 10838915, 21677830]

約数ペア:

[(1, 21677830), (2, 10838915), (5, 4335566), (10, 2167783), (223, 97210), (446, 48605), (1115, 19442), (2230, 9721)]