20418900

素因数分解:

$2^2\times 3^1\times 5^2\times {\mathrm{29}}^1\times {\mathrm{2347}}^1$

素因数の和:2393

約数の個数: 72

約数和(自身を含む): 61141920

約数和(自身を除く): 40723020

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 25, 29, 30, 50, 58, 60, 75, 87, 100, 116, 145, 150, 174, 290, 300, 348, 435, 580, 725, 870, 1450, 1740, 2175, 2347, 2900, 4350, 4694, 7041, 8700, 9388, 11735, 14082, 23470, 28164, 35205, 46940, 58675, 68063, 70410, 117350, 136126, 140820, 176025, 204189, 234700, 272252, 340315, 352050, 408378, 680630, 704100, 816756, 1020945, 1361260, 1701575, 2041890, 3403150, 4083780, 5104725, 6806300, 10209450, 20418900]

約数ペア:

[(1, 20418900), (2, 10209450), (3, 6806300), (4, 5104725), (5, 4083780), (6, 3403150), (10, 2041890), (12, 1701575), (15, 1361260), (20, 1020945), (25, 816756), (29, 704100), (30, 680630), (50, 408378), (58, 352050), (60, 340315), (75, 272252), (87, 234700), (100, 204189), (116, 176025), (145, 140820), (150, 136126), (174, 117350), (290, 70410), (300, 68063), (348, 58675), (435, 46940), (580, 35205), (725, 28164), (870, 23470), (1450, 14082), (1740, 11735), (2175, 9388), (2347, 8700), (2900, 7041), (4350, 4694)]