18320920

素因数分解:

$2^3\times 5^1\times {\mathrm{37}}^1\times {\mathrm{12379}}^1$

素因数の和:12427

約数の個数: 32

約数和(自身を含む): 42339600

約数和(自身を除く): 24018680

約数列:

[1, 2, 4, 5, 8, 10, 20, 37, 40, 74, 148, 185, 296, 370, 740, 1480, 12379, 24758, 49516, 61895, 99032, 123790, 247580, 458023, 495160, 916046, 1832092, 2290115, 3664184, 4580230, 9160460, 18320920]

約数ペア:

[(1, 18320920), (2, 9160460), (4, 4580230), (5, 3664184), (8, 2290115), (10, 1832092), (20, 916046), (37, 495160), (40, 458023), (74, 247580), (148, 123790), (185, 99032), (296, 61895), (370, 49516), (740, 24758), (1480, 12379)]