81660680

素因数分解:

$2^3\times 5^1\times {\mathrm{1097}}^1\times {\mathrm{1861}}^1$

素因数の和:2969

約数の個数: 32

約数和(自身を含む): 184002840

約数和(自身を除く): 102342160

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 1097, 1861, 2194, 3722, 4388, 5485, 7444, 8776, 9305, 10970, 14888, 18610, 21940, 37220, 43880, 74440, 2041517, 4083034, 8166068, 10207585, 16332136, 20415170, 40830340, 81660680]

約数ペア:

[(1, 81660680), (2, 40830340), (4, 20415170), (5, 16332136), (8, 10207585), (10, 8166068), (20, 4083034), (40, 2041517), (1097, 74440), (1861, 43880), (2194, 37220), (3722, 21940), (4388, 18610), (5485, 14888), (7444, 10970), (8776, 9305)]