400820600

素因数分解:

$2^3\times 5^2\times {\mathrm{29}}^2\times {\mathrm{2383}}^1$

素因数の和:2457

約数の個数: 72

約数和(自身を含む): 965555760

約数和(自身を除く): 564735160

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 29, 40, 50, 58, 100, 116, 145, 200, 232, 290, 580, 725, 841, 1160, 1450, 1682, 2383, 2900, 3364, 4205, 4766, 5800, 6728, 8410, 9532, 11915, 16820, 19064, 21025, 23830, 33640, 42050, 47660, 59575, 69107, 84100, 95320, 119150, 138214, 168200, 238300, 276428, 345535, 476600, 552856, 691070, 1382140, 1727675, 2004103, 2764280, 3455350, 4008206, 6910700, 8016412, 10020515, 13821400, 16032824, 20041030, 40082060, 50102575, 80164120, 100205150, 200410300, 400820600]

約数ペア:

[(1, 400820600), (2, 200410300), (4, 100205150), (5, 80164120), (8, 50102575), (10, 40082060), (20, 20041030), (25, 16032824), (29, 13821400), (40, 10020515), (50, 8016412), (58, 6910700), (100, 4008206), (116, 3455350), (145, 2764280), (200, 2004103), (232, 1727675), (290, 1382140), (580, 691070), (725, 552856), (841, 476600), (1160, 345535), (1450, 276428), (1682, 238300), (2383, 168200), (2900, 138214), (3364, 119150), (4205, 95320), (4766, 84100), (5800, 69107), (6728, 59575), (8410, 47660), (9532, 42050), (11915, 33640), (16820, 23830), (19064, 21025)]