221307667

素因数分解:

$7^2\times {\mathrm{31}}^1\times {\mathrm{89}}^1\times {\mathrm{1637}}^1$

素因数の和:1771

約数の個数: 24

約数和(自身を含む): 268894080

約数和(自身を除く): 47586413

約数列:

[1, 7, 31, 49, 89, 217, 623, 1519, 1637, 2759, 4361, 11459, 19313, 50747, 80213, 135191, 145693, 355229, 1019851, 2486603, 4516483, 7138957, 31615381, 221307667]

約数ペア:

[(1, 221307667), (7, 31615381), (31, 7138957), (49, 4516483), (89, 2486603), (217, 1019851), (623, 355229), (1519, 145693), (1637, 135191), (2759, 80213), (4361, 50747), (11459, 19313)]