19804815

素因数分解:

$3^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{14197}}^1$

素因数の和:14239

約数の個数: 24

約数和(自身を含む): 35438208

約数和(自身を除く): 15633393

約数列:

[1, 3, 5, 9, 15, 31, 45, 93, 155, 279, 465, 1395, 14197, 42591, 70985, 127773, 212955, 440107, 638865, 1320321, 2200535, 3960963, 6601605, 19804815]

約数ペア:

[(1, 19804815), (3, 6601605), (5, 3960963), (9, 2200535), (15, 1320321), (31, 638865), (45, 440107), (93, 212955), (155, 127773), (279, 70985), (465, 42591), (1395, 14197)]