21213700

素因数分解:

$2^2\times 5^2\times {\mathrm{307}}^1\times {\mathrm{691}}^1$

素因数の和:1012

約数の個数: 36

約数和(自身を含む): 46250512

約数和(自身を除く): 25036812

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 100, 307, 614, 691, 1228, 1382, 1535, 2764, 3070, 3455, 6140, 6910, 7675, 13820, 15350, 17275, 30700, 34550, 69100, 212137, 424274, 848548, 1060685, 2121370, 4242740, 5303425, 10606850, 21213700]

約数ペア:

[(1, 21213700), (2, 10606850), (4, 5303425), (5, 4242740), (10, 2121370), (20, 1060685), (25, 848548), (50, 424274), (100, 212137), (307, 69100), (614, 34550), (691, 30700), (1228, 17275), (1382, 15350), (1535, 13820), (2764, 7675), (3070, 6910), (3455, 6140)]