208972015

素因数分解:

$5^1\times 7^2\times {\mathrm{337}}^1\times {\mathrm{2531}}^1$

素因数の和:2887

約数の個数: 24

約数和(自身を含む): 292689072

約数和(自身を除く): 83717057

約数列:

[1, 5, 7, 35, 49, 245, 337, 1685, 2359, 2531, 11795, 12655, 16513, 17717, 82565, 88585, 124019, 620095, 852947, 4264735, 5970629, 29853145, 41794403, 208972015]

約数ペア:

[(1, 208972015), (5, 41794403), (7, 29853145), (35, 5970629), (49, 4264735), (245, 852947), (337, 620095), (1685, 124019), (2359, 88585), (2531, 82565), (11795, 17717), (12655, 16513)]