221575809

素因数分解:

$3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{347}}^1\times {\mathrm{2339}}^1$

素因数の和:2709

約数の個数: 32

約数和(自身を含む): 364815360

約数和(自身を除く): 143239551

約数列:

[1, 3, 7, 13, 21, 39, 91, 273, 347, 1041, 2339, 2429, 4511, 7017, 7287, 13533, 16373, 30407, 31577, 49119, 91221, 94731, 212849, 638547, 811633, 2434899, 5681431, 10551229, 17044293, 31653687, 73858603, 221575809]

約数ペア:

[(1, 221575809), (3, 73858603), (7, 31653687), (13, 17044293), (21, 10551229), (39, 5681431), (91, 2434899), (273, 811633), (347, 638547), (1041, 212849), (2339, 94731), (2429, 91221), (4511, 49119), (7017, 31577), (7287, 30407), (13533, 16373)]