20513580

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{43}}^1\times {\mathrm{7951}}^1$

素因数の和:8006

約数の個数: 48

約数和(自身を含む): 58781184

約数和(自身を除く): 38267604

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 43, 60, 86, 129, 172, 215, 258, 430, 516, 645, 860, 1290, 2580, 7951, 15902, 23853, 31804, 39755, 47706, 79510, 95412, 119265, 159020, 238530, 341893, 477060, 683786, 1025679, 1367572, 1709465, 2051358, 3418930, 4102716, 5128395, 6837860, 10256790, 20513580]

約数ペア:

[(1, 20513580), (2, 10256790), (3, 6837860), (4, 5128395), (5, 4102716), (6, 3418930), (10, 2051358), (12, 1709465), (15, 1367572), (20, 1025679), (30, 683786), (43, 477060), (60, 341893), (86, 238530), (129, 159020), (172, 119265), (215, 95412), (258, 79510), (430, 47706), (516, 39755), (645, 31804), (860, 23853), (1290, 15902), (2580, 7951)]