21204338

素因数分解:

$2^1\times {\mathrm{17}}^1\times {\mathrm{431}}^1\times {\mathrm{1447}}^1$

素因数の和:1897

約数の個数: 16

約数和(自身を含む): 33778944

約数和(自身を除く): 12574606

約数列:

[1, 2, 17, 34, 431, 862, 1447, 2894, 7327, 14654, 24599, 49198, 623657, 1247314, 10602169, 21204338]

約数ペア:

[(1, 21204338), (2, 10602169), (17, 1247314), (34, 623657), (431, 49198), (862, 24599), (1447, 14654), (2894, 7327)]