21329392

素因数分解:

$2^4\times 7^1\times {\mathrm{157}}^1\times {\mathrm{1213}}^1$

素因数の和:1385

約数の個数: 40

約数和(自身を含む): 47569376

約数和(自身を除く): 26239984

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 56, 112, 157, 314, 628, 1099, 1213, 1256, 2198, 2426, 2512, 4396, 4852, 8491, 8792, 9704, 16982, 17584, 19408, 33964, 67928, 135856, 190441, 380882, 761764, 1333087, 1523528, 2666174, 3047056, 5332348, 10664696, 21329392]

約数ペア:

[(1, 21329392), (2, 10664696), (4, 5332348), (7, 3047056), (8, 2666174), (14, 1523528), (16, 1333087), (28, 761764), (56, 380882), (112, 190441), (157, 135856), (314, 67928), (628, 33964), (1099, 19408), (1213, 17584), (1256, 16982), (2198, 9704), (2426, 8792), (2512, 8491), (4396, 4852)]