18713872

素因数分解:

$2^4\times {\mathrm{17}}^1\times {\mathrm{107}}^1\times {\mathrm{643}}^1$

素因数の和:775

約数の個数: 40

約数和(自身を含む): 38810016

約数和(自身を除く): 20096144

約数列:

[1, 2, 4, 8, 16, 17, 34, 68, 107, 136, 214, 272, 428, 643, 856, 1286, 1712, 1819, 2572, 3638, 5144, 7276, 10288, 10931, 14552, 21862, 29104, 43724, 68801, 87448, 137602, 174896, 275204, 550408, 1100816, 1169617, 2339234, 4678468, 9356936, 18713872]

約数ペア:

[(1, 18713872), (2, 9356936), (4, 4678468), (8, 2339234), (16, 1169617), (17, 1100816), (34, 550408), (68, 275204), (107, 174896), (136, 137602), (214, 87448), (272, 68801), (428, 43724), (643, 29104), (856, 21862), (1286, 14552), (1712, 10931), (1819, 10288), (2572, 7276), (3638, 5144)]