21960243

素因数分解:

$3^2\times {\mathrm{17}}^2\times {\mathrm{8443}}^1$

素因数の和:8483

約数の個数: 18

約数和(自身を含む): 33700004

約数和(自身を除く): 11739761

約数列:

[1, 3, 9, 17, 51, 153, 289, 867, 2601, 8443, 25329, 75987, 143531, 430593, 1291779, 2440027, 7320081, 21960243]

約数ペア:

[(1, 21960243), (3, 7320081), (9, 2440027), (17, 1291779), (51, 430593), (153, 143531), (289, 75987), (867, 25329), (2601, 8443)]