20398650

素因数分解:

$2^1\times 3^1\times 5^2\times {\mathrm{239}}^1\times {\mathrm{569}}^1$

素因数の和:823

約数の個数: 48

約数和(自身を含む): 50889600

約数和(自身を除く): 30490950

約数列:

[1, 2, 3, 5, 6, 10, 15, 25, 30, 50, 75, 150, 239, 478, 569, 717, 1138, 1195, 1434, 1707, 2390, 2845, 3414, 3585, 5690, 5975, 7170, 8535, 11950, 14225, 17070, 17925, 28450, 35850, 42675, 85350, 135991, 271982, 407973, 679955, 815946, 1359910, 2039865, 3399775, 4079730, 6799550, 10199325, 20398650]

約数ペア:

[(1, 20398650), (2, 10199325), (3, 6799550), (5, 4079730), (6, 3399775), (10, 2039865), (15, 1359910), (25, 815946), (30, 679955), (50, 407973), (75, 271982), (150, 135991), (239, 85350), (478, 42675), (569, 35850), (717, 28450), (1138, 17925), (1195, 17070), (1434, 14225), (1707, 11950), (2390, 8535), (2845, 7170), (3414, 5975), (3585, 5690)]