21971754

素因数分解:

$2^1\times 3^2\times 7^1\times {\mathrm{103}}^1\times {\mathrm{1693}}^1$

素因数の和:1811

約数の個数: 48

約数和(自身を含む): 54966912

約数和(自身を除く): 32995158

約数列:

[1, 2, 3, 6, 7, 9, 14, 18, 21, 42, 63, 103, 126, 206, 309, 618, 721, 927, 1442, 1693, 1854, 2163, 3386, 4326, 5079, 6489, 10158, 11851, 12978, 15237, 23702, 30474, 35553, 71106, 106659, 174379, 213318, 348758, 523137, 1046274, 1220653, 1569411, 2441306, 3138822, 3661959, 7323918, 10985877, 21971754]

約数ペア:

[(1, 21971754), (2, 10985877), (3, 7323918), (6, 3661959), (7, 3138822), (9, 2441306), (14, 1569411), (18, 1220653), (21, 1046274), (42, 523137), (63, 348758), (103, 213318), (126, 174379), (206, 106659), (309, 71106), (618, 35553), (721, 30474), (927, 23702), (1442, 15237), (1693, 12978), (1854, 11851), (2163, 10158), (3386, 6489), (4326, 5079)]