81104080

素因数分解:

$2^4\times 5^1\times {\mathrm{383}}^1\times {\mathrm{2647}}^1$

素因数の和:3043

約数の個数: 40

約数和(自身を含む): 189130752

約数和(自身を除く): 108026672

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 383, 766, 1532, 1915, 2647, 3064, 3830, 5294, 6128, 7660, 10588, 13235, 15320, 21176, 26470, 30640, 42352, 52940, 105880, 211760, 1013801, 2027602, 4055204, 5069005, 8110408, 10138010, 16220816, 20276020, 40552040, 81104080]

約数ペア:

[(1, 81104080), (2, 40552040), (4, 20276020), (5, 16220816), (8, 10138010), (10, 8110408), (16, 5069005), (20, 4055204), (40, 2027602), (80, 1013801), (383, 211760), (766, 105880), (1532, 52940), (1915, 42352), (2647, 30640), (3064, 26470), (3830, 21176), (5294, 15320), (6128, 13235), (7660, 10588)]