20695900

素因数分解:

$2^2\times 5^2\times {\mathrm{43}}^1\times {\mathrm{4813}}^1$

素因数の和:4870

約数の個数: 36

約数和(自身を含む): 45964072

約数和(自身を除く): 25268172

約数列:

[1, 2, 4, 5, 10, 20, 25, 43, 50, 86, 100, 172, 215, 430, 860, 1075, 2150, 4300, 4813, 9626, 19252, 24065, 48130, 96260, 120325, 206959, 240650, 413918, 481300, 827836, 1034795, 2069590, 4139180, 5173975, 10347950, 20695900]

約数ペア:

[(1, 20695900), (2, 10347950), (4, 5173975), (5, 4139180), (10, 2069590), (20, 1034795), (25, 827836), (43, 481300), (50, 413918), (86, 240650), (100, 206959), (172, 120325), (215, 96260), (430, 48130), (860, 24065), (1075, 19252), (2150, 9626), (4300, 4813)]