31568020

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{43}}^1\times {\mathrm{47}}^1\times {\mathrm{71}}^1$

素因数の和:181

約数の個数: 96

約数和(自身を含む): 76640256

約数和(自身を除く): 45072236

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 43, 44, 47, 55, 71, 86, 94, 110, 142, 172, 188, 215, 220, 235, 284, 355, 430, 470, 473, 517, 710, 781, 860, 940, 946, 1034, 1420, 1562, 1892, 2021, 2068, 2365, 2585, 3053, 3124, 3337, 3905, 4042, 4730, 5170, 6106, 6674, 7810, 8084, 9460, 10105, 10340, 12212, 13348, 15265, 15620, 16685, 20210, 22231, 30530, 33370, 33583, 36707, 40420, 44462, 61060, 66740, 67166, 73414, 88924, 111155, 134332, 143491, 146828, 167915, 183535, 222310, 286982, 335830, 367070, 444620, 573964, 671660, 717455, 734140, 1434910, 1578401, 2869820, 3156802, 6313604, 7892005, 15784010, 31568020]

約数ペア:

[(1, 31568020), (2, 15784010), (4, 7892005), (5, 6313604), (10, 3156802), (11, 2869820), (20, 1578401), (22, 1434910), (43, 734140), (44, 717455), (47, 671660), (55, 573964), (71, 444620), (86, 367070), (94, 335830), (110, 286982), (142, 222310), (172, 183535), (188, 167915), (215, 146828), (220, 143491), (235, 134332), (284, 111155), (355, 88924), (430, 73414), (470, 67166), (473, 66740), (517, 61060), (710, 44462), (781, 40420), (860, 36707), (940, 33583), (946, 33370), (1034, 30530), (1420, 22231), (1562, 20210), (1892, 16685), (2021, 15620), (2068, 15265), (2365, 13348), (2585, 12212), (3053, 10340), (3124, 10105), (3337, 9460), (3905, 8084), (4042, 7810), (4730, 6674), (5170, 6106)]