21970052

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{29}}^1\times {\mathrm{857}}^1$

素因数の和:920

約数の個数: 48

約数和(自身を含む): 45405360

約数和(自身を除く): 23435308

約数列:

[1, 2, 4, 13, 17, 26, 29, 34, 52, 58, 68, 116, 221, 377, 442, 493, 754, 857, 884, 986, 1508, 1714, 1972, 3428, 6409, 11141, 12818, 14569, 22282, 24853, 25636, 29138, 44564, 49706, 58276, 99412, 189397, 323089, 378794, 422501, 646178, 757588, 845002, 1292356, 1690004, 5492513, 10985026, 21970052]

約数ペア:

[(1, 21970052), (2, 10985026), (4, 5492513), (13, 1690004), (17, 1292356), (26, 845002), (29, 757588), (34, 646178), (52, 422501), (58, 378794), (68, 323089), (116, 189397), (221, 99412), (377, 58276), (442, 49706), (493, 44564), (754, 29138), (857, 25636), (884, 24853), (986, 22282), (1508, 14569), (1714, 12818), (1972, 11141), (3428, 6409)]