21848645

素因数分解:

$5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{1549}}^1$

素因数の和:1605

約数の個数: 32

約数和(自身を含む): 33331200

約数和(自身を除く): 11482555

約数列:

[1, 5, 7, 13, 31, 35, 65, 91, 155, 217, 403, 455, 1085, 1549, 2015, 2821, 7745, 10843, 14105, 20137, 48019, 54215, 100685, 140959, 240095, 336133, 624247, 704795, 1680665, 3121235, 4369729, 21848645]

約数ペア:

[(1, 21848645), (5, 4369729), (7, 3121235), (13, 1680665), (31, 704795), (35, 624247), (65, 336133), (91, 240095), (155, 140959), (217, 100685), (403, 54215), (455, 48019), (1085, 20137), (1549, 14105), (2015, 10843), (2821, 7745)]