20257660

素因数分解:

$2^2\times 5^1\times {\mathrm{29}}^1\times {\mathrm{53}}^1\times {\mathrm{659}}^1$

素因数の和:750

約数の個数: 48

約数和(自身を含む): 44906400

約数和(自身を除く): 24648740

約数列:

[1, 2, 4, 5, 10, 20, 29, 53, 58, 106, 116, 145, 212, 265, 290, 530, 580, 659, 1060, 1318, 1537, 2636, 3074, 3295, 6148, 6590, 7685, 13180, 15370, 19111, 30740, 34927, 38222, 69854, 76444, 95555, 139708, 174635, 191110, 349270, 382220, 698540, 1012883, 2025766, 4051532, 5064415, 10128830, 20257660]

約数ペア:

[(1, 20257660), (2, 10128830), (4, 5064415), (5, 4051532), (10, 2025766), (20, 1012883), (29, 698540), (53, 382220), (58, 349270), (106, 191110), (116, 174635), (145, 139708), (212, 95555), (265, 76444), (290, 69854), (530, 38222), (580, 34927), (659, 30740), (1060, 19111), (1318, 15370), (1537, 13180), (2636, 7685), (3074, 6590), (3295, 6148)]