20644484

素因数分解:

$2^2\times 7^3\times {\mathrm{41}}^1\times {\mathrm{367}}^1$

素因数の和:433

約数の個数: 48

約数和(自身を含む): 43276800

約数和(自身を除く): 22632316

約数列:

[1, 2, 4, 7, 14, 28, 41, 49, 82, 98, 164, 196, 287, 343, 367, 574, 686, 734, 1148, 1372, 1468, 2009, 2569, 4018, 5138, 8036, 10276, 14063, 15047, 17983, 28126, 30094, 35966, 56252, 60188, 71932, 105329, 125881, 210658, 251762, 421316, 503524, 737303, 1474606, 2949212, 5161121, 10322242, 20644484]

約数ペア:

[(1, 20644484), (2, 10322242), (4, 5161121), (7, 2949212), (14, 1474606), (28, 737303), (41, 503524), (49, 421316), (82, 251762), (98, 210658), (164, 125881), (196, 105329), (287, 71932), (343, 60188), (367, 56252), (574, 35966), (686, 30094), (734, 28126), (1148, 17983), (1372, 15047), (1468, 14063), (2009, 10276), (2569, 8036), (4018, 5138)]