664756065

素因数分解:

$3^4\times 5^1\times {\mathrm{1641373}}^1$

素因数の和:1641390

約数の個数: 20

約数和(自身を含む): 1191637524

約数和(自身を除く): 526881459

約数列:

[1, 3, 5, 9, 15, 27, 45, 81, 135, 405, 1641373, 4924119, 8206865, 14772357, 24620595, 44317071, 73861785, 132951213, 221585355, 664756065]

約数ペア:

[(1, 664756065), (3, 221585355), (5, 132951213), (9, 73861785), (15, 44317071), (27, 24620595), (45, 14772357), (81, 8206865), (135, 4924119), (405, 1641373)]