20661095

素因数分解:

$5^1\times 7^2\times {\mathrm{13}}^2\times {\mathrm{499}}^1$

素因数の和:544

約数の個数: 36

約数和(自身を含む): 31293000

約数和(自身を除く): 10631905

約数列:

[1, 5, 7, 13, 35, 49, 65, 91, 169, 245, 455, 499, 637, 845, 1183, 2495, 3185, 3493, 5915, 6487, 8281, 17465, 24451, 32435, 41405, 45409, 84331, 122255, 227045, 317863, 421655, 590317, 1589315, 2951585, 4132219, 20661095]

約数ペア:

[(1, 20661095), (5, 4132219), (7, 2951585), (13, 1589315), (35, 590317), (49, 421655), (65, 317863), (91, 227045), (169, 122255), (245, 84331), (455, 45409), (499, 41405), (637, 32435), (845, 24451), (1183, 17465), (2495, 8281), (3185, 6487), (3493, 5915)]