399411439

素因数分解:

$7^1\times {\mathrm{79}}^1\times {\mathrm{523}}^1\times {\mathrm{1381}}^1$

素因数の和:1990

約数の個数: 16

約数和(自身を含む): 463467520

約数和(自身を除く): 64056081

約数列:

[1, 7, 79, 523, 553, 1381, 3661, 9667, 41317, 109099, 289219, 722263, 763693, 5055841, 57058777, 399411439]

約数ペア:

[(1, 399411439), (7, 57058777), (79, 5055841), (523, 763693), (553, 722263), (1381, 289219), (3661, 109099), (9667, 41317)]