21887855

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{167}}^1\times {\mathrm{2383}}^1$

素因数の和:2566

約数の個数: 16

約数和(自身を含む): 28836864

約数和(自身を除く): 6949009

約数列:

[1, 5, 11, 55, 167, 835, 1837, 2383, 9185, 11915, 26213, 131065, 397961, 1989805, 4377571, 21887855]

約数ペア:

[(1, 21887855), (5, 4377571), (11, 1989805), (55, 397961), (167, 131065), (835, 26213), (1837, 11915), (2383, 9185)]