201231560

素因数分解:

$2^3\times 5^1\times {\mathrm{197}}^1\times {\mathrm{25537}}^1$

素因数の和:25745

約数の個数: 32

約数和(自身を含む): 455087160

約数和(自身を除く): 253855600

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 197, 394, 788, 985, 1576, 1970, 3940, 7880, 25537, 51074, 102148, 127685, 204296, 255370, 510740, 1021480, 5030789, 10061578, 20123156, 25153945, 40246312, 50307890, 100615780, 201231560]

約数ペア:

[(1, 201231560), (2, 100615780), (4, 50307890), (5, 40246312), (8, 25153945), (10, 20123156), (20, 10061578), (40, 5030789), (197, 1021480), (394, 510740), (788, 255370), (985, 204296), (1576, 127685), (1970, 102148), (3940, 51074), (7880, 25537)]