31151320

素因数分解:

$2^3\times 5^1\times {\mathrm{103}}^1\times {\mathrm{7561}}^1$

素因数の和:7675

約数の個数: 32

約数和(自身を含む): 70780320

約数和(自身を除く): 39629000

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 103, 206, 412, 515, 824, 1030, 2060, 4120, 7561, 15122, 30244, 37805, 60488, 75610, 151220, 302440, 778783, 1557566, 3115132, 3893915, 6230264, 7787830, 15575660, 31151320]

約数ペア:

[(1, 31151320), (2, 15575660), (4, 7787830), (5, 6230264), (8, 3893915), (10, 3115132), (20, 1557566), (40, 778783), (103, 302440), (206, 151220), (412, 75610), (515, 60488), (824, 37805), (1030, 30244), (2060, 15122), (4120, 7561)]