1640394909

素因数分解:

$3^4\times {\mathrm{263}}^1\times {\mathrm{77003}}^1$

素因数の和:77278

約数の個数: 20

約数和(自身を含む): 2459815776

約数和(自身を除く): 819420867

約数列:

[1, 3, 9, 27, 81, 263, 789, 2367, 7101, 21303, 77003, 231009, 693027, 2079081, 6237243, 20251789, 60755367, 182266101, 546798303, 1640394909]

約数ペア:

[(1, 1640394909), (3, 546798303), (9, 182266101), (27, 60755367), (81, 20251789), (263, 6237243), (789, 2079081), (2367, 693027), (7101, 231009), (21303, 77003)]