19654240

素因数分解:

$2^5\times 5^1\times {\mathrm{122839}}^1$

素因数の和:122854

約数の個数: 24

約数和(自身を含む): 46433520

約数和(自身を除く): 26779280

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 160, 122839, 245678, 491356, 614195, 982712, 1228390, 1965424, 2456780, 3930848, 4913560, 9827120, 19654240]

約数ペア:

[(1, 19654240), (2, 9827120), (4, 4913560), (5, 3930848), (8, 2456780), (10, 1965424), (16, 1228390), (20, 982712), (32, 614195), (40, 491356), (80, 245678), (160, 122839)]