20187580

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{41}}^1\times {\mathrm{3517}}^1$

素因数の和:3574

約数の個数: 48

約数和(自身を含む): 49646016

約数和(自身を除く): 29458436

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 41, 70, 82, 140, 164, 205, 287, 410, 574, 820, 1148, 1435, 2870, 3517, 5740, 7034, 14068, 17585, 24619, 35170, 49238, 70340, 98476, 123095, 144197, 246190, 288394, 492380, 576788, 720985, 1009379, 1441970, 2018758, 2883940, 4037516, 5046895, 10093790, 20187580]

約数ペア:

[(1, 20187580), (2, 10093790), (4, 5046895), (5, 4037516), (7, 2883940), (10, 2018758), (14, 1441970), (20, 1009379), (28, 720985), (35, 576788), (41, 492380), (70, 288394), (82, 246190), (140, 144197), (164, 123095), (205, 98476), (287, 70340), (410, 49238), (574, 35170), (820, 24619), (1148, 17585), (1435, 14068), (2870, 7034), (3517, 5740)]