20121103900

素因数分解:

$2^2\times 5^2\times {\mathrm{107}}^1\times {\mathrm{863}}^1\times {\mathrm{2179}}^1$

素因数の和:3163

約数の個数: 72

約数和(自身を含む): 44142174720

約数和(自身を除く): 24021070820

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 100, 107, 214, 428, 535, 863, 1070, 1726, 2140, 2179, 2675, 3452, 4315, 4358, 5350, 8630, 8716, 10700, 10895, 17260, 21575, 21790, 43150, 43580, 54475, 86300, 92341, 108950, 184682, 217900, 233153, 369364, 461705, 466306, 923410, 932612, 1165765, 1846820, 1880477, 2308525, 2331530, 3760954, 4617050, 4663060, 5828825, 7521908, 9234100, 9402385, 11657650, 18804770, 23315300, 37609540, 47011925, 94023850, 188047700, 201211039, 402422078, 804844156, 1006055195, 2012110390, 4024220780, 5030275975, 10060551950, 20121103900]

約数ペア:

[(1, 20121103900), (2, 10060551950), (4, 5030275975), (5, 4024220780), (10, 2012110390), (20, 1006055195), (25, 804844156), (50, 402422078), (100, 201211039), (107, 188047700), (214, 94023850), (428, 47011925), (535, 37609540), (863, 23315300), (1070, 18804770), (1726, 11657650), (2140, 9402385), (2179, 9234100), (2675, 7521908), (3452, 5828825), (4315, 4663060), (4358, 4617050), (5350, 3760954), (8630, 2331530), (8716, 2308525), (10700, 1880477), (10895, 1846820), (17260, 1165765), (21575, 932612), (21790, 923410), (43150, 466306), (43580, 461705), (54475, 369364), (86300, 233153), (92341, 217900), (108950, 184682)]