21264173

素因数分解:

$7^1\times {\mathrm{19}}^1\times {\mathrm{61}}^1\times {\mathrm{2621}}^1$

素因数の和:2708

約数の個数: 16

約数和(自身を含む): 26010240

約数和(自身を除く): 4746067

約数列:

[1, 7, 19, 61, 133, 427, 1159, 2621, 8113, 18347, 49799, 159881, 348593, 1119167, 3037739, 21264173]

約数ペア:

[(1, 21264173), (7, 3037739), (19, 1119167), (61, 348593), (133, 159881), (427, 49799), (1159, 18347), (2621, 8113)]