21240895

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{229}}^1\times {\mathrm{1427}}^1$

素因数の和:1674

約数の個数: 16

約数和(自身を含む): 27588960

約数和(自身を除く): 6348065

約数列:

[1, 5, 13, 65, 229, 1145, 1427, 2977, 7135, 14885, 18551, 92755, 326783, 1633915, 4248179, 21240895]

約数ペア:

[(1, 21240895), (5, 4248179), (13, 1633915), (65, 326783), (229, 92755), (1145, 18551), (1427, 14885), (2977, 7135)]