65342840

素因数分解:

$2^3\times 5^1\times {\mathrm{1009}}^1\times {\mathrm{1619}}^1$

素因数の和:2639

約数の個数: 32

約数和(自身を含む): 147258000

約数和(自身を除く): 81915160

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 1009, 1619, 2018, 3238, 4036, 5045, 6476, 8072, 8095, 10090, 12952, 16190, 20180, 32380, 40360, 64760, 1633571, 3267142, 6534284, 8167855, 13068568, 16335710, 32671420, 65342840]

約数ペア:

[(1, 65342840), (2, 32671420), (4, 16335710), (5, 13068568), (8, 8167855), (10, 6534284), (20, 3267142), (40, 1633571), (1009, 64760), (1619, 40360), (2018, 32380), (3238, 20180), (4036, 16190), (5045, 12952), (6476, 10090), (8072, 8095)]