19209987

素因数分解:

$3^3\times {\mathrm{31}}^1\times {\mathrm{59}}^1\times {\mathrm{389}}^1$

素因数の和:488

約数の個数: 32

約数和(自身を含む): 29952000

約数和(自身を除く): 10742013

約数列:

[1, 3, 9, 27, 31, 59, 93, 177, 279, 389, 531, 837, 1167, 1593, 1829, 3501, 5487, 10503, 12059, 16461, 22951, 36177, 49383, 68853, 108531, 206559, 325593, 619677, 711481, 2134443, 6403329, 19209987]

約数ペア:

[(1, 19209987), (3, 6403329), (9, 2134443), (27, 711481), (31, 619677), (59, 325593), (93, 206559), (177, 108531), (279, 68853), (389, 49383), (531, 36177), (837, 22951), (1167, 16461), (1593, 12059), (1829, 10503), (3501, 5487)]