21861845

素因数分解:

$5^1\times {\mathrm{23}}^1\times {\mathrm{43}}^1\times {\mathrm{4421}}^1$

素因数の和:4492

約数の個数: 16

約数和(自身を含む): 28017792

約数和(自身を除く): 6155947

約数列:

[1, 5, 23, 43, 115, 215, 989, 4421, 4945, 22105, 101683, 190103, 508415, 950515, 4372369, 21861845]

約数ペア:

[(1, 21861845), (5, 4372369), (23, 950515), (43, 508415), (115, 190103), (215, 101683), (989, 22105), (4421, 4945)]