21398678

素因数分解:

$2^1\times 7^1\times {\mathrm{61}}^1\times {\mathrm{25057}}^1$

素因数の和:25127

約数の個数: 16

約数和(自身を含む): 37286304

約数和(自身を除く): 15887626

約数列:

[1, 2, 7, 14, 61, 122, 427, 854, 25057, 50114, 175399, 350798, 1528477, 3056954, 10699339, 21398678]

約数ペア:

[(1, 21398678), (2, 10699339), (7, 3056954), (14, 1528477), (61, 350798), (122, 175399), (427, 50114), (854, 25057)]