21180442

素因数分解:

$2^1\times {\mathrm{67}}^1\times {\mathrm{263}}^1\times {\mathrm{601}}^1$

素因数の和:933

約数の個数: 16

約数和(自身を含む): 32421312

約数和(自身を除く): 11240870

約数列:

[1, 2, 67, 134, 263, 526, 601, 1202, 17621, 35242, 40267, 80534, 158063, 316126, 10590221, 21180442]

約数ペア:

[(1, 21180442), (2, 10590221), (67, 316126), (134, 158063), (263, 80534), (526, 40267), (601, 35242), (1202, 17621)]