12858100

素因数分解:

$2^2\times 5^2\times {\mathrm{71}}^1\times {\mathrm{1811}}^1$

素因数の和:1896

約数の個数: 36

約数和(自身を含む): 28310688

約数和(自身を除く): 15452588

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 71, 100, 142, 284, 355, 710, 1420, 1775, 1811, 3550, 3622, 7100, 7244, 9055, 18110, 36220, 45275, 90550, 128581, 181100, 257162, 514324, 642905, 1285810, 2571620, 3214525, 6429050, 12858100]

約数ペア:

[(1, 12858100), (2, 6429050), (4, 3214525), (5, 2571620), (10, 1285810), (20, 642905), (25, 514324), (50, 257162), (71, 181100), (100, 128581), (142, 90550), (284, 45275), (355, 36220), (710, 18110), (1420, 9055), (1775, 7244), (1811, 7100), (3550, 3622)]