64016840

素因数分解:

$2^3\times 5^1\times {\mathrm{1600421}}^1$

素因数の和:1600432

約数の個数: 16

約数和(自身を含む): 144037980

約数和(自身を除く): 80021140

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 1600421, 3200842, 6401684, 8002105, 12803368, 16004210, 32008420, 64016840]

約数ペア:

[(1, 64016840), (2, 32008420), (4, 16004210), (5, 12803368), (8, 8002105), (10, 6401684), (20, 3200842), (40, 1600421)]