20685450

素因数分解:

$2^1\times 3^1\times 5^2\times {\mathrm{239}}^1\times {\mathrm{577}}^1$

素因数の和:831

約数の個数: 48

約数和(自身を含む): 51603840

約数和(自身を除く): 30918390

約数列:

[1, 2, 3, 5, 6, 10, 15, 25, 30, 50, 75, 150, 239, 478, 577, 717, 1154, 1195, 1434, 1731, 2390, 2885, 3462, 3585, 5770, 5975, 7170, 8655, 11950, 14425, 17310, 17925, 28850, 35850, 43275, 86550, 137903, 275806, 413709, 689515, 827418, 1379030, 2068545, 3447575, 4137090, 6895150, 10342725, 20685450]

約数ペア:

[(1, 20685450), (2, 10342725), (3, 6895150), (5, 4137090), (6, 3447575), (10, 2068545), (15, 1379030), (25, 827418), (30, 689515), (50, 413709), (75, 275806), (150, 137903), (239, 86550), (478, 43275), (577, 35850), (717, 28850), (1154, 17925), (1195, 17310), (1434, 14425), (1731, 11950), (2390, 8655), (2885, 7170), (3462, 5975), (3585, 5770)]