21109630

素因数分解:

$2^1\times 5^1\times {\mathrm{23}}^1\times {\mathrm{91781}}^1$

素因数の和:91811

約数の個数: 16

約数和(自身を含む): 39649824

約数和(自身を除く): 18540194

約数列:

[1, 2, 5, 10, 23, 46, 115, 230, 91781, 183562, 458905, 917810, 2110963, 4221926, 10554815, 21109630]

約数ペア:

[(1, 21109630), (2, 10554815), (5, 4221926), (10, 2110963), (23, 917810), (46, 458905), (115, 183562), (230, 91781)]