20104420

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{163}}^1\times {\mathrm{881}}^1$

素因数の和:1060

約数の個数: 48

約数和(自身を含む): 48601728

約数和(自身を除く): 28497308

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 163, 326, 652, 815, 881, 1141, 1630, 1762, 2282, 3260, 3524, 4405, 4564, 5705, 6167, 8810, 11410, 12334, 17620, 22820, 24668, 30835, 61670, 123340, 143603, 287206, 574412, 718015, 1005221, 1436030, 2010442, 2872060, 4020884, 5026105, 10052210, 20104420]

約数ペア:

[(1, 20104420), (2, 10052210), (4, 5026105), (5, 4020884), (7, 2872060), (10, 2010442), (14, 1436030), (20, 1005221), (28, 718015), (35, 574412), (70, 287206), (140, 143603), (163, 123340), (326, 61670), (652, 30835), (815, 24668), (881, 22820), (1141, 17620), (1630, 12334), (1762, 11410), (2282, 8810), (3260, 6167), (3524, 5705), (4405, 4564)]