20125900

素因数分解:

$2^2\times 5^2\times {\mathrm{313}}^1\times {\mathrm{643}}^1$

素因数の和:970

約数の個数: 36

約数和(自身を含む): 43880872

約数和(自身を除く): 23754972

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 100, 313, 626, 643, 1252, 1286, 1565, 2572, 3130, 3215, 6260, 6430, 7825, 12860, 15650, 16075, 31300, 32150, 64300, 201259, 402518, 805036, 1006295, 2012590, 4025180, 5031475, 10062950, 20125900]

約数ペア:

[(1, 20125900), (2, 10062950), (4, 5031475), (5, 4025180), (10, 2012590), (20, 1006295), (25, 805036), (50, 402518), (100, 201259), (313, 64300), (626, 32150), (643, 31300), (1252, 16075), (1286, 15650), (1565, 12860), (2572, 7825), (3130, 6430), (3215, 6260)]