19803609

素因数分解:

$3^4\times 7^1\times {\mathrm{53}}^1\times {\mathrm{659}}^1$

素因数の和:731

約数の個数: 40

約数和(自身を含む): 34499520

約数和(自身を除く): 14695911

約数列:

[1, 3, 7, 9, 21, 27, 53, 63, 81, 159, 189, 371, 477, 567, 659, 1113, 1431, 1977, 3339, 4293, 4613, 5931, 10017, 13839, 17793, 30051, 34927, 41517, 53379, 104781, 124551, 244489, 314343, 373653, 733467, 943029, 2200401, 2829087, 6601203, 19803609]

約数ペア:

[(1, 19803609), (3, 6601203), (7, 2829087), (9, 2200401), (21, 943029), (27, 733467), (53, 373653), (63, 314343), (81, 244489), (159, 124551), (189, 104781), (371, 53379), (477, 41517), (567, 34927), (659, 30051), (1113, 17793), (1431, 13839), (1977, 10017), (3339, 5931), (4293, 4613)]