399972021

素因数分解:

$3^1\times {\mathrm{19}}^1\times {\mathrm{47}}^1\times {\mathrm{173}}^1\times {\mathrm{863}}^1$

素因数の和:1105

約数の個数: 32

約数和(自身を含む): 577290240

約数和(自身を除く): 177318219

約数列:

[1, 3, 19, 47, 57, 141, 173, 519, 863, 893, 2589, 2679, 3287, 8131, 9861, 16397, 24393, 40561, 49191, 121683, 149299, 154489, 447897, 463467, 770659, 2311977, 2836681, 7017053, 8510043, 21051159, 133324007, 399972021]

約数ペア:

[(1, 399972021), (3, 133324007), (19, 21051159), (47, 8510043), (57, 7017053), (141, 2836681), (173, 2311977), (519, 770659), (863, 463467), (893, 447897), (2589, 154489), (2679, 149299), (3287, 121683), (8131, 49191), (9861, 40561), (16397, 24393)]