81205360

素因数分解:

$2^4\times 5^1\times {\mathrm{1015067}}^1$

素因数の和:1015080

約数の個数: 20

約数和(自身を含む): 188802648

約数和(自身を除く): 107597288

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 1015067, 2030134, 4060268, 5075335, 8120536, 10150670, 16241072, 20301340, 40602680, 81205360]

約数ペア:

[(1, 81205360), (2, 40602680), (4, 20301340), (5, 16241072), (8, 10150670), (10, 8120536), (16, 5075335), (20, 4060268), (40, 2030134), (80, 1015067)]