201555500

素因数分解:

$2^2\times 5^3\times {\mathrm{491}}^1\times {\mathrm{821}}^1$

素因数の和:1331

約数の個数: 48

約数和(自身を含む): 441631008

約数和(自身を除く): 240075508

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 100, 125, 250, 491, 500, 821, 982, 1642, 1964, 2455, 3284, 4105, 4910, 8210, 9820, 12275, 16420, 20525, 24550, 41050, 49100, 61375, 82100, 102625, 122750, 205250, 245500, 403111, 410500, 806222, 1612444, 2015555, 4031110, 8062220, 10077775, 20155550, 40311100, 50388875, 100777750, 201555500]

約数ペア:

[(1, 201555500), (2, 100777750), (4, 50388875), (5, 40311100), (10, 20155550), (20, 10077775), (25, 8062220), (50, 4031110), (100, 2015555), (125, 1612444), (250, 806222), (491, 410500), (500, 403111), (821, 245500), (982, 205250), (1642, 122750), (1964, 102625), (2455, 82100), (3284, 61375), (4105, 49100), (4910, 41050), (8210, 24550), (9820, 20525), (12275, 16420)]