209425100

素因数分解:

$2^2\times 5^2\times {\mathrm{643}}^1\times {\mathrm{3257}}^1$

素因数の和:3914

約数の個数: 36

約数和(自身を含む): 455298984

約数和(自身を除く): 245873884

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 100, 643, 1286, 2572, 3215, 3257, 6430, 6514, 12860, 13028, 16075, 16285, 32150, 32570, 64300, 65140, 81425, 162850, 325700, 2094251, 4188502, 8377004, 10471255, 20942510, 41885020, 52356275, 104712550, 209425100]

約数ペア:

[(1, 209425100), (2, 104712550), (4, 52356275), (5, 41885020), (10, 20942510), (20, 10471255), (25, 8377004), (50, 4188502), (100, 2094251), (643, 325700), (1286, 162850), (2572, 81425), (3215, 65140), (3257, 64300), (6430, 32570), (6514, 32150), (12860, 16285), (13028, 16075)]