20512450

素因数分解:

$2^1\times 5^2\times 7^1\times {\mathrm{103}}^1\times {\mathrm{569}}^1$

素因数の和:691

約数の個数: 48

約数和(自身を含む): 44104320

約数和(自身を除く): 23591870

約数列:

[1, 2, 5, 7, 10, 14, 25, 35, 50, 70, 103, 175, 206, 350, 515, 569, 721, 1030, 1138, 1442, 2575, 2845, 3605, 3983, 5150, 5690, 7210, 7966, 14225, 18025, 19915, 28450, 36050, 39830, 58607, 99575, 117214, 199150, 293035, 410249, 586070, 820498, 1465175, 2051245, 2930350, 4102490, 10256225, 20512450]

約数ペア:

[(1, 20512450), (2, 10256225), (5, 4102490), (7, 2930350), (10, 2051245), (14, 1465175), (25, 820498), (35, 586070), (50, 410249), (70, 293035), (103, 199150), (175, 117214), (206, 99575), (350, 58607), (515, 39830), (569, 36050), (721, 28450), (1030, 19915), (1138, 18025), (1442, 14225), (2575, 7966), (2845, 7210), (3605, 5690), (3983, 5150)]