40620440

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{239}}^1\times {\mathrm{607}}^1$

素因数の和:864

約数の個数: 64

約数和(自身を含む): 105062400

約数和(自身を除く): 64441960

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 239, 280, 478, 607, 956, 1195, 1214, 1673, 1912, 2390, 2428, 3035, 3346, 4249, 4780, 4856, 6070, 6692, 8365, 8498, 9560, 12140, 13384, 16730, 16996, 21245, 24280, 33460, 33992, 42490, 66920, 84980, 145073, 169960, 290146, 580292, 725365, 1015511, 1160584, 1450730, 2031022, 2901460, 4062044, 5077555, 5802920, 8124088, 10155110, 20310220, 40620440]

約数ペア:

[(1, 40620440), (2, 20310220), (4, 10155110), (5, 8124088), (7, 5802920), (8, 5077555), (10, 4062044), (14, 2901460), (20, 2031022), (28, 1450730), (35, 1160584), (40, 1015511), (56, 725365), (70, 580292), (140, 290146), (239, 169960), (280, 145073), (478, 84980), (607, 66920), (956, 42490), (1195, 33992), (1214, 33460), (1673, 24280), (1912, 21245), (2390, 16996), (2428, 16730), (3035, 13384), (3346, 12140), (4249, 9560), (4780, 8498), (4856, 8365), (6070, 6692)]