19421320

素因数分解:

$2^3\times 5^1\times {\mathrm{53}}^1\times {\mathrm{9161}}^1$

素因数の和:9225

約数の個数: 32

約数和(自身を含む): 44527320

約数和(自身を除く): 25106000

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 53, 106, 212, 265, 424, 530, 1060, 2120, 9161, 18322, 36644, 45805, 73288, 91610, 183220, 366440, 485533, 971066, 1942132, 2427665, 3884264, 4855330, 9710660, 19421320]

約数ペア:

[(1, 19421320), (2, 9710660), (4, 4855330), (5, 3884264), (8, 2427665), (10, 1942132), (20, 971066), (40, 485533), (53, 366440), (106, 183220), (212, 91610), (265, 73288), (424, 45805), (530, 36644), (1060, 18322), (2120, 9161)]