19491673648

素因数分解:

$2^4\times {\mathrm{43}}^1\times {\mathrm{28330921}}^1$

素因数の和:28330972

約数の個数: 20

約数和(自身を含む): 38643377608

約数和(自身を除く): 19151703960

約数列:

[1, 2, 4, 8, 16, 43, 86, 172, 344, 688, 28330921, 56661842, 113323684, 226647368, 453294736, 1218229603, 2436459206, 4872918412, 9745836824, 19491673648]

約数ペア:

[(1, 19491673648), (2, 9745836824), (4, 4872918412), (8, 2436459206), (16, 1218229603), (43, 453294736), (86, 226647368), (172, 113323684), (344, 56661842), (688, 28330921)]