20625400

素因数分解:

$2^3\times 5^2\times {\mathrm{281}}^1\times {\mathrm{367}}^1$

素因数の和:664

約数の個数: 48

約数和(自身を含む): 48255840

約数和(自身を除く): 27630440

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 50, 100, 200, 281, 367, 562, 734, 1124, 1405, 1468, 1835, 2248, 2810, 2936, 3670, 5620, 7025, 7340, 9175, 11240, 14050, 14680, 18350, 28100, 36700, 56200, 73400, 103127, 206254, 412508, 515635, 825016, 1031270, 2062540, 2578175, 4125080, 5156350, 10312700, 20625400]

約数ペア:

[(1, 20625400), (2, 10312700), (4, 5156350), (5, 4125080), (8, 2578175), (10, 2062540), (20, 1031270), (25, 825016), (40, 515635), (50, 412508), (100, 206254), (200, 103127), (281, 73400), (367, 56200), (562, 36700), (734, 28100), (1124, 18350), (1405, 14680), (1468, 14050), (1835, 11240), (2248, 9175), (2810, 7340), (2936, 7025), (3670, 5620)]