21872810

素因数分解:

$2^1\times 5^1\times {\mathrm{43}}^1\times {\mathrm{50867}}^1$

素因数の和:50917

約数の個数: 16

約数和(自身を含む): 40287456

約数和(自身を除く): 18414646

約数列:

[1, 2, 5, 10, 43, 86, 215, 430, 50867, 101734, 254335, 508670, 2187281, 4374562, 10936405, 21872810]

約数ペア:

[(1, 21872810), (2, 10936405), (5, 4374562), (10, 2187281), (43, 508670), (86, 254335), (215, 101734), (430, 50867)]