19428549

素因数分解:

$3^1\times 7^3\times {\mathrm{79}}^1\times {\mathrm{239}}^1$

素因数の和:342

約数の個数: 32

約数和(自身を含む): 30720000

約数和(自身を除く): 11291451

約数列:

[1, 3, 7, 21, 49, 79, 147, 237, 239, 343, 553, 717, 1029, 1659, 1673, 3871, 5019, 11613, 11711, 18881, 27097, 35133, 56643, 81291, 81977, 132167, 245931, 396501, 925169, 2775507, 6476183, 19428549]

約数ペア:

[(1, 19428549), (3, 6476183), (7, 2775507), (21, 925169), (49, 396501), (79, 245931), (147, 132167), (237, 81977), (239, 81291), (343, 56643), (553, 35133), (717, 27097), (1029, 18881), (1659, 11711), (1673, 11613), (3871, 5019)]