1521640

素因数分解:

$2^3\times 5^1\times {\mathrm{109}}^1\times {\mathrm{349}}^1$

素因数の和:469

約数の個数: 32

約数和(自身を含む): 3465000

約数和(自身を除く): 1943360

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 109, 218, 349, 436, 545, 698, 872, 1090, 1396, 1745, 2180, 2792, 3490, 4360, 6980, 13960, 38041, 76082, 152164, 190205, 304328, 380410, 760820, 1521640]

約数ペア:

[(1, 1521640), (2, 760820), (4, 380410), (5, 304328), (8, 190205), (10, 152164), (20, 76082), (40, 38041), (109, 13960), (218, 6980), (349, 4360), (436, 3490), (545, 2792), (698, 2180), (872, 1745), (1090, 1396)]