81609975

素因数分解:

$3^2\times 5^2\times {\mathrm{37}}^1\times {\mathrm{9803}}^1$

素因数の和:9856

約数の個数: 36

約数和(自身を含む): 150138456

約数和(自身を除く): 68528481

約数列:

[1, 3, 5, 9, 15, 25, 37, 45, 75, 111, 185, 225, 333, 555, 925, 1665, 2775, 8325, 9803, 29409, 49015, 88227, 147045, 245075, 362711, 441135, 735225, 1088133, 1813555, 2205675, 3264399, 5440665, 9067775, 16321995, 27203325, 81609975]

約数ペア:

[(1, 81609975), (3, 27203325), (5, 16321995), (9, 9067775), (15, 5440665), (25, 3264399), (37, 2205675), (45, 1813555), (75, 1088133), (111, 735225), (185, 441135), (225, 362711), (333, 245075), (555, 147045), (925, 88227), (1665, 49015), (2775, 29409), (8325, 9803)]