20291019

素因数分解:

$3^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{71}}^1\times {\mathrm{439}}^1$

素因数の和:551

約数の個数: 32

約数和(自身を含む): 32440320

約数和(自身を除く): 12149301

約数列:

[1, 3, 7, 21, 31, 71, 93, 213, 217, 439, 497, 651, 1317, 1491, 2201, 3073, 6603, 9219, 13609, 15407, 31169, 40827, 46221, 93507, 95263, 218183, 285789, 654549, 966239, 2898717, 6763673, 20291019]

約数ペア:

[(1, 20291019), (3, 6763673), (7, 2898717), (21, 966239), (31, 654549), (71, 285789), (93, 218183), (213, 95263), (217, 93507), (439, 46221), (497, 40827), (651, 31169), (1317, 15407), (1491, 13609), (2201, 9219), (3073, 6603)]