21901610

素因数分解:

$2^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{128833}}^1$

素因数の和:128857

約数の個数: 16

約数和(自身を含む): 41742216

約数和(自身を除く): 19840606

約数列:

[1, 2, 5, 10, 17, 34, 85, 170, 128833, 257666, 644165, 1288330, 2190161, 4380322, 10950805, 21901610]

約数ペア:

[(1, 21901610), (2, 10950805), (5, 4380322), (10, 2190161), (17, 1288330), (34, 644165), (85, 257666), (170, 128833)]