21058869

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{1381}}^1$

素因数の和:1437

約数の個数: 32

約数和(自身を含む): 33433344

約数和(自身を除く): 12374475

約数列:

[1, 3, 13, 17, 23, 39, 51, 69, 221, 299, 391, 663, 897, 1173, 1381, 4143, 5083, 15249, 17953, 23477, 31763, 53859, 70431, 95289, 305201, 412919, 539971, 915603, 1238757, 1619913, 7019623, 21058869]

約数ペア:

[(1, 21058869), (3, 7019623), (13, 1619913), (17, 1238757), (23, 915603), (39, 539971), (51, 412919), (69, 305201), (221, 95289), (299, 70431), (391, 53859), (663, 31763), (897, 23477), (1173, 17953), (1381, 15249), (4143, 5083)]