2008180

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{41}}^1\times {\mathrm{79}}^1$

素因数の和:160

約数の個数: 48

約数和(自身を含む): 4515840

約数和(自身を除く): 2507660

約数列:

[1, 2, 4, 5, 10, 20, 31, 41, 62, 79, 82, 124, 155, 158, 164, 205, 310, 316, 395, 410, 620, 790, 820, 1271, 1580, 2449, 2542, 3239, 4898, 5084, 6355, 6478, 9796, 12245, 12710, 12956, 16195, 24490, 25420, 32390, 48980, 64780, 100409, 200818, 401636, 502045, 1004090, 2008180]

約数ペア:

[(1, 2008180), (2, 1004090), (4, 502045), (5, 401636), (10, 200818), (20, 100409), (31, 64780), (41, 48980), (62, 32390), (79, 25420), (82, 24490), (124, 16195), (155, 12956), (158, 12710), (164, 12245), (205, 9796), (310, 6478), (316, 6355), (395, 5084), (410, 4898), (620, 3239), (790, 2542), (820, 2449), (1271, 1580)]