820888964

素因数分解:

$2^2\times 7^2\times {\mathrm{29}}^1\times {\mathrm{139}}^1\times {\mathrm{1039}}^1$

素因数の和:1225

約数の個数: 72

約数和(自身を含む): 1742832000

約数和(自身を除く): 921943036

約数列:

[1, 2, 4, 7, 14, 28, 29, 49, 58, 98, 116, 139, 196, 203, 278, 406, 556, 812, 973, 1039, 1421, 1946, 2078, 2842, 3892, 4031, 4156, 5684, 6811, 7273, 8062, 13622, 14546, 16124, 27244, 28217, 29092, 30131, 50911, 56434, 60262, 101822, 112868, 120524, 144421, 197519, 203644, 210917, 288842, 395038, 421834, 577684, 790076, 843668, 1010947, 1476419, 2021894, 2952838, 4043788, 4188209, 5905676, 7076629, 8376418, 14153258, 16752836, 28306516, 29317463, 58634926, 117269852, 205222241, 410444482, 820888964]

約数ペア:

[(1, 820888964), (2, 410444482), (4, 205222241), (7, 117269852), (14, 58634926), (28, 29317463), (29, 28306516), (49, 16752836), (58, 14153258), (98, 8376418), (116, 7076629), (139, 5905676), (196, 4188209), (203, 4043788), (278, 2952838), (406, 2021894), (556, 1476419), (812, 1010947), (973, 843668), (1039, 790076), (1421, 577684), (1946, 421834), (2078, 395038), (2842, 288842), (3892, 210917), (4031, 203644), (4156, 197519), (5684, 144421), (6811, 120524), (7273, 112868), (8062, 101822), (13622, 60262), (14546, 56434), (16124, 50911), (27244, 30131), (28217, 29092)]