81172360

素因数分解:

$2^3\times 5^1\times {\mathrm{577}}^1\times {\mathrm{3517}}^1$

素因数の和:4105

約数の個数: 32

約数和(自身を含む): 183006360

約数和(自身を除く): 101834000

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 577, 1154, 2308, 2885, 3517, 4616, 5770, 7034, 11540, 14068, 17585, 23080, 28136, 35170, 70340, 140680, 2029309, 4058618, 8117236, 10146545, 16234472, 20293090, 40586180, 81172360]

約数ペア:

[(1, 81172360), (2, 40586180), (4, 20293090), (5, 16234472), (8, 10146545), (10, 8117236), (20, 4058618), (40, 2029309), (577, 140680), (1154, 70340), (2308, 35170), (2885, 28136), (3517, 23080), (4616, 17585), (5770, 14068), (7034, 11540)]