211216

素因数分解:

$2^4\times {\mathrm{43}}^1\times {\mathrm{307}}^1$

素因数の和:358

約数の個数: 20

約数和(自身を含む): 420112

約数和(自身を除く): 208896

約数列:

[1, 2, 4, 8, 16, 43, 86, 172, 307, 344, 614, 688, 1228, 2456, 4912, 13201, 26402, 52804, 105608, 211216]

約数ペア:

[(1, 211216), (2, 105608), (4, 52804), (8, 26402), (16, 13201), (43, 4912), (86, 2456), (172, 1228), (307, 688), (344, 614)]