12987915

素因数分解:

$3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{31}}^2\times {\mathrm{53}}^1$

素因数の和:140

約数の個数: 48

約数和(自身を含む): 23164704

約数和(自身を除く): 10176789

約数列:

[1, 3, 5, 15, 17, 31, 51, 53, 85, 93, 155, 159, 255, 265, 465, 527, 795, 901, 961, 1581, 1643, 2635, 2703, 2883, 4505, 4805, 4929, 7905, 8215, 13515, 14415, 16337, 24645, 27931, 49011, 50933, 81685, 83793, 139655, 152799, 245055, 254665, 418965, 763995, 865861, 2597583, 4329305, 12987915]

約数ペア:

[(1, 12987915), (3, 4329305), (5, 2597583), (15, 865861), (17, 763995), (31, 418965), (51, 254665), (53, 245055), (85, 152799), (93, 139655), (155, 83793), (159, 81685), (255, 50933), (265, 49011), (465, 27931), (527, 24645), (795, 16337), (901, 14415), (961, 13515), (1581, 8215), (1643, 7905), (2635, 4929), (2703, 4805), (2883, 4505)]