20921272

素因数分解:

$2^3\times {\mathrm{113}}^1\times {\mathrm{23143}}^1$

素因数の和:23262

約数の個数: 16

約数和(自身を含む): 39576240

約数和(自身を除く): 18654968

約数列:

[1, 2, 4, 8, 113, 226, 452, 904, 23143, 46286, 92572, 185144, 2615159, 5230318, 10460636, 20921272]

約数ペア:

[(1, 20921272), (2, 10460636), (4, 5230318), (8, 2615159), (113, 185144), (226, 92572), (452, 46286), (904, 23143)]