1388629431

素因数分解:

$3^2\times 7^1\times {\mathrm{71}}^1\times {\mathrm{310447}}^1$

素因数の和:310531

約数の個数: 24

約数和(自身を含む): 2324634624

約数和(自身を除く): 936005193

約数列:

[1, 3, 7, 9, 21, 63, 71, 213, 497, 639, 1491, 4473, 310447, 931341, 2173129, 2794023, 6519387, 19558161, 22041737, 66125211, 154292159, 198375633, 462876477, 1388629431]

約数ペア:

[(1, 1388629431), (3, 462876477), (7, 198375633), (9, 154292159), (21, 66125211), (63, 22041737), (71, 19558161), (213, 6519387), (497, 2794023), (639, 2173129), (1491, 931341), (4473, 310447)]