18936687

素因数分解:

$3^1\times 7^4\times {\mathrm{11}}^1\times {\mathrm{239}}^1$

素因数の和:281

約数の個数: 40

約数和(自身を含む): 32267520

約数和(自身を除く): 13330833

約数列:

[1, 3, 7, 11, 21, 33, 49, 77, 147, 231, 239, 343, 539, 717, 1029, 1617, 1673, 2401, 2629, 3773, 5019, 7203, 7887, 11319, 11711, 18403, 26411, 35133, 55209, 79233, 81977, 128821, 245931, 386463, 573839, 901747, 1721517, 2705241, 6312229, 18936687]

約数ペア:

[(1, 18936687), (3, 6312229), (7, 2705241), (11, 1721517), (21, 901747), (33, 573839), (49, 386463), (77, 245931), (147, 128821), (231, 81977), (239, 79233), (343, 55209), (539, 35133), (717, 26411), (1029, 18403), (1617, 11711), (1673, 11319), (2401, 7887), (2629, 7203), (3773, 5019)]