19009995

素因数分解:

$3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{127}}^1\times {\mathrm{587}}^1$

素因数の和:739

約数の個数: 32

約数和(自身を含む): 32514048

約数和(自身を除く): 13504053

約数列:

[1, 3, 5, 15, 17, 51, 85, 127, 255, 381, 587, 635, 1761, 1905, 2159, 2935, 6477, 8805, 9979, 10795, 29937, 32385, 49895, 74549, 149685, 223647, 372745, 1118235, 1267333, 3801999, 6336665, 19009995]

約数ペア:

[(1, 19009995), (3, 6336665), (5, 3801999), (15, 1267333), (17, 1118235), (51, 372745), (85, 223647), (127, 149685), (255, 74549), (381, 49895), (587, 32385), (635, 29937), (1761, 10795), (1905, 9979), (2159, 8805), (2935, 6477)]