20321000

素因数分解:

$2^3\times 5^3\times 7^1\times {\mathrm{2903}}^1$

素因数の和:2931

約数の個数: 64

約数和(自身を含む): 54362880

約数和(自身を除く): 34041880

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 25, 28, 35, 40, 50, 56, 70, 100, 125, 140, 175, 200, 250, 280, 350, 500, 700, 875, 1000, 1400, 1750, 2903, 3500, 5806, 7000, 11612, 14515, 20321, 23224, 29030, 40642, 58060, 72575, 81284, 101605, 116120, 145150, 162568, 203210, 290300, 362875, 406420, 508025, 580600, 725750, 812840, 1016050, 1451500, 2032100, 2540125, 2903000, 4064200, 5080250, 10160500, 20321000]

約数ペア:

[(1, 20321000), (2, 10160500), (4, 5080250), (5, 4064200), (7, 2903000), (8, 2540125), (10, 2032100), (14, 1451500), (20, 1016050), (25, 812840), (28, 725750), (35, 580600), (40, 508025), (50, 406420), (56, 362875), (70, 290300), (100, 203210), (125, 162568), (140, 145150), (175, 116120), (200, 101605), (250, 81284), (280, 72575), (350, 58060), (500, 40642), (700, 29030), (875, 23224), (1000, 20321), (1400, 14515), (1750, 11612), (2903, 7000), (3500, 5806)]