17881906

素因数分解:

$2^1\times 7^1\times {\mathrm{61}}^1\times {\mathrm{20939}}^1$

素因数の和:21009

約数の個数: 16

約数和(自身を含む): 31158720

約数和(自身を除く): 13276814

約数列:

[1, 2, 7, 14, 61, 122, 427, 854, 20939, 41878, 146573, 293146, 1277279, 2554558, 8940953, 17881906]

約数ペア:

[(1, 17881906), (2, 8940953), (7, 2554558), (14, 1277279), (61, 293146), (122, 146573), (427, 41878), (854, 20939)]