17921617

素因数分解:

$7^1\times {\mathrm{19}}^1\times {\mathrm{47}}^2\times {\mathrm{61}}^1$

素因数の和:181

約数の個数: 24

約数和(自身を含む): 22389440

約数和(自身を除く): 4467823

約数列:

[1, 7, 19, 47, 61, 133, 329, 427, 893, 1159, 2209, 2867, 6251, 8113, 15463, 20069, 41971, 54473, 134749, 293797, 381311, 943243, 2560231, 17921617]

約数ペア:

[(1, 17921617), (7, 2560231), (19, 943243), (47, 381311), (61, 293797), (133, 134749), (329, 54473), (427, 41971), (893, 20069), (1159, 15463), (2209, 8113), (2867, 6251)]