21457582990

素因数分解:

$2^1\times 5^1\times {\mathrm{155501}}^1\times {\mathrm{13799}}^1$

素因数の和:169307

約数の個数: 16

約数和(自身を含む): 38626696800

約数和(自身を除く): 17169113810

約数列:

[1, 2, 5, 10, 13799, 27598, 68995, 137990, 155501, 311002, 777505, 1555010, 2145758299, 4291516598, 10728791495, 21457582990]

約数ペア:

[(1, 21457582990), (2, 10728791495), (5, 4291516598), (10, 2145758299), (13799, 1555010), (27598, 777505), (68995, 311002), (137990, 155501)]