21524180

素因数分解:

$2^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{26249}}^1$

素因数の和:26299

約数の個数: 24

約数和(自身を含む): 46305000

約数和(自身を除く): 24780820

約数列:

[1, 2, 4, 5, 10, 20, 41, 82, 164, 205, 410, 820, 26249, 52498, 104996, 131245, 262490, 524980, 1076209, 2152418, 4304836, 5381045, 10762090, 21524180]

約数ペア:

[(1, 21524180), (2, 10762090), (4, 5381045), (5, 4304836), (10, 2152418), (20, 1076209), (41, 524980), (82, 262490), (164, 131245), (205, 104996), (410, 52498), (820, 26249)]