31291820

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{101}}^1\times {\mathrm{2213}}^1$

素因数の和:2330

約数の個数: 48

約数和(自身を含む): 75878208

約数和(自身を除く): 44586388

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 101, 140, 202, 404, 505, 707, 1010, 1414, 2020, 2213, 2828, 3535, 4426, 7070, 8852, 11065, 14140, 15491, 22130, 30982, 44260, 61964, 77455, 154910, 223513, 309820, 447026, 894052, 1117565, 1564591, 2235130, 3129182, 4470260, 6258364, 7822955, 15645910, 31291820]

約数ペア:

[(1, 31291820), (2, 15645910), (4, 7822955), (5, 6258364), (7, 4470260), (10, 3129182), (14, 2235130), (20, 1564591), (28, 1117565), (35, 894052), (70, 447026), (101, 309820), (140, 223513), (202, 154910), (404, 77455), (505, 61964), (707, 44260), (1010, 30982), (1414, 22130), (2020, 15491), (2213, 14140), (2828, 11065), (3535, 8852), (4426, 7070)]