18393680

素因数分解:

$2^4\times 5^1\times {\mathrm{43}}^1\times {\mathrm{5347}}^1$

素因数の和:5403

約数の個数: 40

約数和(自身を含む): 43768032

約数和(自身を除く): 25374352

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 43, 80, 86, 172, 215, 344, 430, 688, 860, 1720, 3440, 5347, 10694, 21388, 26735, 42776, 53470, 85552, 106940, 213880, 229921, 427760, 459842, 919684, 1149605, 1839368, 2299210, 3678736, 4598420, 9196840, 18393680]

約数ペア:

[(1, 18393680), (2, 9196840), (4, 4598420), (5, 3678736), (8, 2299210), (10, 1839368), (16, 1149605), (20, 919684), (40, 459842), (43, 427760), (80, 229921), (86, 213880), (172, 106940), (215, 85552), (344, 53470), (430, 42776), (688, 26735), (860, 21388), (1720, 10694), (3440, 5347)]