399285880

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{41}}^1\times {\mathrm{34781}}^1$

素因数の和:34840

約数の個数: 64

約数和(自身を含む): 1051807680

約数和(自身を除く): 652521800

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 41, 56, 70, 82, 140, 164, 205, 280, 287, 328, 410, 574, 820, 1148, 1435, 1640, 2296, 2870, 5740, 11480, 34781, 69562, 139124, 173905, 243467, 278248, 347810, 486934, 695620, 973868, 1217335, 1391240, 1426021, 1947736, 2434670, 2852042, 4869340, 5704084, 7130105, 9738680, 9982147, 11408168, 14260210, 19964294, 28520420, 39928588, 49910735, 57040840, 79857176, 99821470, 199642940, 399285880]

約数ペア:

[(1, 399285880), (2, 199642940), (4, 99821470), (5, 79857176), (7, 57040840), (8, 49910735), (10, 39928588), (14, 28520420), (20, 19964294), (28, 14260210), (35, 11408168), (40, 9982147), (41, 9738680), (56, 7130105), (70, 5704084), (82, 4869340), (140, 2852042), (164, 2434670), (205, 1947736), (280, 1426021), (287, 1391240), (328, 1217335), (410, 973868), (574, 695620), (820, 486934), (1148, 347810), (1435, 278248), (1640, 243467), (2296, 173905), (2870, 139124), (5740, 69562), (11480, 34781)]