28781180

素因数分解:

$2^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{35099}}^1$

素因数の和:35149

約数の個数: 24

約数和(自身を含む): 61916400

約数和(自身を除く): 33135220

約数列:

[1, 2, 4, 5, 10, 20, 41, 82, 164, 205, 410, 820, 35099, 70198, 140396, 175495, 350990, 701980, 1439059, 2878118, 5756236, 7195295, 14390590, 28781180]

約数ペア:

[(1, 28781180), (2, 14390590), (4, 7195295), (5, 5756236), (10, 2878118), (20, 1439059), (41, 701980), (82, 350990), (164, 175495), (205, 140396), (410, 70198), (820, 35099)]