28657648

素因数分解:

$2^4\times {\mathrm{17}}^1\times {\mathrm{105359}}^1$

素因数の和:105384

約数の個数: 20

約数和(自身を含む): 58790880

約数和(自身を除く): 30133232

約数列:

[1, 2, 4, 8, 16, 17, 34, 68, 136, 272, 105359, 210718, 421436, 842872, 1685744, 1791103, 3582206, 7164412, 14328824, 28657648]

約数ペア:

[(1, 28657648), (2, 14328824), (4, 7164412), (8, 3582206), (16, 1791103), (17, 1685744), (34, 842872), (68, 421436), (136, 210718), (272, 105359)]