155778100

素因数分解:

$2^2\times 5^2\times {\mathrm{31}}^2\times {\mathrm{1621}}^1$

素因数の和:1697

約数の個数: 54

約数和(自身を含む): 349510182

約数和(自身を除く): 193732082

約数列:

[1, 2, 4, 5, 10, 20, 25, 31, 50, 62, 100, 124, 155, 310, 620, 775, 961, 1550, 1621, 1922, 3100, 3242, 3844, 4805, 6484, 8105, 9610, 16210, 19220, 24025, 32420, 40525, 48050, 50251, 81050, 96100, 100502, 162100, 201004, 251255, 502510, 1005020, 1256275, 1557781, 2512550, 3115562, 5025100, 6231124, 7788905, 15577810, 31155620, 38944525, 77889050, 155778100]

約数ペア:

[(1, 155778100), (2, 77889050), (4, 38944525), (5, 31155620), (10, 15577810), (20, 7788905), (25, 6231124), (31, 5025100), (50, 3115562), (62, 2512550), (100, 1557781), (124, 1256275), (155, 1005020), (310, 502510), (620, 251255), (775, 201004), (961, 162100), (1550, 100502), (1621, 96100), (1922, 81050), (3100, 50251), (3242, 48050), (3844, 40525), (4805, 32420), (6484, 24025), (8105, 19220), (9610, 16210)]