20158460

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{109}}^1\times {\mathrm{1321}}^1$

素因数の和:1446

約数の個数: 48

約数和(自身を含む): 48861120

約数和(自身を除く): 28702660

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 109, 140, 218, 436, 545, 763, 1090, 1321, 1526, 2180, 2642, 3052, 3815, 5284, 6605, 7630, 9247, 13210, 15260, 18494, 26420, 36988, 46235, 92470, 143989, 184940, 287978, 575956, 719945, 1007923, 1439890, 2015846, 2879780, 4031692, 5039615, 10079230, 20158460]

約数ペア:

[(1, 20158460), (2, 10079230), (4, 5039615), (5, 4031692), (7, 2879780), (10, 2015846), (14, 1439890), (20, 1007923), (28, 719945), (35, 575956), (70, 287978), (109, 184940), (140, 143989), (218, 92470), (436, 46235), (545, 36988), (763, 26420), (1090, 18494), (1321, 15260), (1526, 13210), (2180, 9247), (2642, 7630), (3052, 6605), (3815, 5284)]