19739013

素因数分解:

$3^1\times 7^2\times {\mathrm{47}}^1\times {\mathrm{2857}}^1$

素因数の和:2921

約数の個数: 24

約数和(自身を含む): 31277952

約数和(自身を除く): 11538939

約数列:

[1, 3, 7, 21, 47, 49, 141, 147, 329, 987, 2303, 2857, 6909, 8571, 19999, 59997, 134279, 139993, 402837, 419979, 939953, 2819859, 6579671, 19739013]

約数ペア:

[(1, 19739013), (3, 6579671), (7, 2819859), (21, 939953), (47, 419979), (49, 402837), (141, 139993), (147, 134279), (329, 59997), (987, 19999), (2303, 8571), (2857, 6909)]