21297845168

素因数分解:

$2^4\times {\mathrm{631}}^1\times {\mathrm{2109533}}^1$

素因数の和:2110172

約数の個数: 20

約数和(自身を含む): 41329990128

約数和(自身を除く): 20032144960

約数列:

[1, 2, 4, 8, 16, 631, 1262, 2524, 5048, 10096, 2109533, 4219066, 8438132, 16876264, 33752528, 1331115323, 2662230646, 5324461292, 10648922584, 21297845168]

約数ペア:

[(1, 21297845168), (2, 10648922584), (4, 5324461292), (8, 2662230646), (16, 1331115323), (631, 33752528), (1262, 16876264), (2524, 8438132), (5048, 4219066), (10096, 2109533)]