31525720

素因数分解:

$2^3\times 5^1\times {\mathrm{41}}^1\times {\mathrm{47}}^1\times {\mathrm{409}}^1$

素因数の和:508

約数の個数: 64

約数和(自身を含む): 74390400

約数和(自身を除く): 42864680

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 41, 47, 82, 94, 164, 188, 205, 235, 328, 376, 409, 410, 470, 818, 820, 940, 1636, 1640, 1880, 1927, 2045, 3272, 3854, 4090, 7708, 8180, 9635, 15416, 16360, 16769, 19223, 19270, 33538, 38446, 38540, 67076, 76892, 77080, 83845, 96115, 134152, 153784, 167690, 192230, 335380, 384460, 670760, 768920, 788143, 1576286, 3152572, 3940715, 6305144, 7881430, 15762860, 31525720]

約数ペア:

[(1, 31525720), (2, 15762860), (4, 7881430), (5, 6305144), (8, 3940715), (10, 3152572), (20, 1576286), (40, 788143), (41, 768920), (47, 670760), (82, 384460), (94, 335380), (164, 192230), (188, 167690), (205, 153784), (235, 134152), (328, 96115), (376, 83845), (409, 77080), (410, 76892), (470, 67076), (818, 38540), (820, 38446), (940, 33538), (1636, 19270), (1640, 19223), (1880, 16769), (1927, 16360), (2045, 15416), (3272, 9635), (3854, 8180), (4090, 7708)]