20259820

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{47}}^1\times {\mathrm{3079}}^1$

素因数の和:3142

約数の個数: 48

約数和(自身を含む): 49674240

約数和(自身を除く): 29414420

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 47, 70, 94, 140, 188, 235, 329, 470, 658, 940, 1316, 1645, 3079, 3290, 6158, 6580, 12316, 15395, 21553, 30790, 43106, 61580, 86212, 107765, 144713, 215530, 289426, 431060, 578852, 723565, 1012991, 1447130, 2025982, 2894260, 4051964, 5064955, 10129910, 20259820]

約数ペア:

[(1, 20259820), (2, 10129910), (4, 5064955), (5, 4051964), (7, 2894260), (10, 2025982), (14, 1447130), (20, 1012991), (28, 723565), (35, 578852), (47, 431060), (70, 289426), (94, 215530), (140, 144713), (188, 107765), (235, 86212), (329, 61580), (470, 43106), (658, 30790), (940, 21553), (1316, 15395), (1645, 12316), (3079, 6580), (3290, 6158)]