21454945

素因数分解:

$5^1\times {\mathrm{31}}^1\times {\mathrm{97}}^1\times {\mathrm{1427}}^1$

素因数の和:1560

約数の個数: 16

約数和(自身を含む): 26869248

約数和(自身を除く): 5414303

約数列:

[1, 5, 31, 97, 155, 485, 1427, 3007, 7135, 15035, 44237, 138419, 221185, 692095, 4290989, 21454945]

約数ペア:

[(1, 21454945), (5, 4290989), (31, 692095), (97, 221185), (155, 138419), (485, 44237), (1427, 15035), (3007, 7135)]