21349276

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{79}}^1\times {\mathrm{5197}}^1$

素因数の和:5293

約数の個数: 24

約数和(自身を含む): 40752320

約数和(自身を除く): 19403044

約数列:

[1, 2, 4, 13, 26, 52, 79, 158, 316, 1027, 2054, 4108, 5197, 10394, 20788, 67561, 135122, 270244, 410563, 821126, 1642252, 5337319, 10674638, 21349276]

約数ペア:

[(1, 21349276), (2, 10674638), (4, 5337319), (13, 1642252), (26, 821126), (52, 410563), (79, 270244), (158, 135122), (316, 67561), (1027, 20788), (2054, 10394), (4108, 5197)]