19889218

素因数分解:

$2^1\times {\mathrm{17}}^1\times {\mathrm{67}}^1\times {\mathrm{8731}}^1$

素因数の和:8817

約数の個数: 16

約数和(自身を含む): 32063904

約数和(自身を除く): 12174686

約数列:

[1, 2, 17, 34, 67, 134, 1139, 2278, 8731, 17462, 148427, 296854, 584977, 1169954, 9944609, 19889218]

約数ペア:

[(1, 19889218), (2, 9944609), (17, 1169954), (34, 584977), (67, 296854), (134, 148427), (1139, 17462), (2278, 8731)]