81597980

素因数分解:

$2^2\times 5^1\times {\mathrm{853}}^1\times {\mathrm{4783}}^1$

素因数の和:5645

約数の個数: 24

約数和(自身を含む): 171592512

約数和(自身を除く): 89994532

約数列:

[1, 2, 4, 5, 10, 20, 853, 1706, 3412, 4265, 4783, 8530, 9566, 17060, 19132, 23915, 47830, 95660, 4079899, 8159798, 16319596, 20399495, 40798990, 81597980]

約数ペア:

[(1, 81597980), (2, 40798990), (4, 20399495), (5, 16319596), (10, 8159798), (20, 4079899), (853, 95660), (1706, 47830), (3412, 23915), (4265, 19132), (4783, 17060), (8530, 9566)]