668918991

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{79}}^1\times {\mathrm{217111}}^1$

素因数の和:217206

約数の個数: 16

約数和(自身を含む): 972661760

約数和(自身を除く): 303742769

約数列:

[1, 3, 13, 39, 79, 237, 1027, 3081, 217111, 651333, 2822443, 8467329, 17151769, 51455307, 222972997, 668918991]

約数ペア:

[(1, 668918991), (3, 222972997), (13, 51455307), (39, 17151769), (79, 8467329), (237, 2822443), (1027, 651333), (3081, 217111)]