13121320

素因数分解:

$2^3\times 5^1\times {\mathrm{223}}^1\times {\mathrm{1471}}^1$

素因数の和:1705

約数の個数: 32

約数和(自身を含む): 29675520

約数和(自身を除く): 16554200

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 223, 446, 892, 1115, 1471, 1784, 2230, 2942, 4460, 5884, 7355, 8920, 11768, 14710, 29420, 58840, 328033, 656066, 1312132, 1640165, 2624264, 3280330, 6560660, 13121320]

約数ペア:

[(1, 13121320), (2, 6560660), (4, 3280330), (5, 2624264), (8, 1640165), (10, 1312132), (20, 656066), (40, 328033), (223, 58840), (446, 29420), (892, 14710), (1115, 11768), (1471, 8920), (1784, 7355), (2230, 5884), (2942, 4460)]