289740040

素因数分解:

$2^3\times 5^1\times {\mathrm{311}}^1\times {\mathrm{23291}}^1$

素因数の和:23613

約数の個数: 32

約数和(自身を含む): 654039360

約数和(自身を除く): 364299320

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 311, 622, 1244, 1555, 2488, 3110, 6220, 12440, 23291, 46582, 93164, 116455, 186328, 232910, 465820, 931640, 7243501, 14487002, 28974004, 36217505, 57948008, 72435010, 144870020, 289740040]

約数ペア:

[(1, 289740040), (2, 144870020), (4, 72435010), (5, 57948008), (8, 36217505), (10, 28974004), (20, 14487002), (40, 7243501), (311, 931640), (622, 465820), (1244, 232910), (1555, 186328), (2488, 116455), (3110, 93164), (6220, 46582), (12440, 23291)]