21001936

素因数分解:

$2^4\times {\mathrm{17}}^1\times {\mathrm{77213}}^1$

素因数の和:77238

約数の個数: 20

約数和(自身を含む): 43085412

約数和(自身を除く): 22083476

約数列:

[1, 2, 4, 8, 16, 17, 34, 68, 136, 272, 77213, 154426, 308852, 617704, 1235408, 1312621, 2625242, 5250484, 10500968, 21001936]

約数ペア:

[(1, 21001936), (2, 10500968), (4, 5250484), (8, 2625242), (16, 1312621), (17, 1235408), (34, 617704), (68, 308852), (136, 154426), (272, 77213)]