21200870

素因数分解:

$2^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{311}}^1\times {\mathrm{401}}^1$

素因数の和:736

約数の個数: 32

約数和(自身を含む): 40637376

約数和(自身を除く): 19436506

約数列:

[1, 2, 5, 10, 17, 34, 85, 170, 311, 401, 622, 802, 1555, 2005, 3110, 4010, 5287, 6817, 10574, 13634, 26435, 34085, 52870, 68170, 124711, 249422, 623555, 1247110, 2120087, 4240174, 10600435, 21200870]

約数ペア:

[(1, 21200870), (2, 10600435), (5, 4240174), (10, 2120087), (17, 1247110), (34, 623555), (85, 249422), (170, 124711), (311, 68170), (401, 52870), (622, 34085), (802, 26435), (1555, 13634), (2005, 10574), (3110, 6817), (4010, 5287)]