20703921

素因数分解:

$3^1\times 7^2\times {\mathrm{127}}^1\times {\mathrm{1109}}^1$

素因数の和:1253

約数の個数: 24

約数和(自身を含む): 32394240

約数和(自身を除く): 11690319

約数列:

[1, 3, 7, 21, 49, 127, 147, 381, 889, 1109, 2667, 3327, 6223, 7763, 18669, 23289, 54341, 140843, 163023, 422529, 985901, 2957703, 6901307, 20703921]

約数ペア:

[(1, 20703921), (3, 6901307), (7, 2957703), (21, 985901), (49, 422529), (127, 163023), (147, 140843), (381, 54341), (889, 23289), (1109, 18669), (2667, 7763), (3327, 6223)]