21458120

素因数分解:

$2^3\times 5^1\times {\mathrm{536453}}^1$

素因数の和:536464

約数の個数: 16

約数和(自身を含む): 48280860

約数和(自身を除く): 26822740

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 536453, 1072906, 2145812, 2682265, 4291624, 5364530, 10729060, 21458120]

約数ペア:

[(1, 21458120), (2, 10729060), (4, 5364530), (5, 4291624), (8, 2682265), (10, 2145812), (20, 1072906), (40, 536453)]