289431640

素因数分解:

$2^3\times 5^1\times {\mathrm{47}}^1\times {\mathrm{153953}}^1$

素因数の和:154011

約数の個数: 32

約数和(自身を含む): 665081280

約数和(自身を除く): 375649640

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 47, 94, 188, 235, 376, 470, 940, 1880, 153953, 307906, 615812, 769765, 1231624, 1539530, 3079060, 6158120, 7235791, 14471582, 28943164, 36178955, 57886328, 72357910, 144715820, 289431640]

約数ペア:

[(1, 289431640), (2, 144715820), (4, 72357910), (5, 57886328), (8, 36178955), (10, 28943164), (20, 14471582), (40, 7235791), (47, 6158120), (94, 3079060), (188, 1539530), (235, 1231624), (376, 769765), (470, 615812), (940, 307906), (1880, 153953)]