12991935

素因数分解:

$3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{71}}^1\times {\mathrm{1109}}^1$

素因数の和:1199

約数の個数: 32

約数和(自身を含む): 23016960

約数和(自身を除く): 10025025

約数列:

[1, 3, 5, 11, 15, 33, 55, 71, 165, 213, 355, 781, 1065, 1109, 2343, 3327, 3905, 5545, 11715, 12199, 16635, 36597, 60995, 78739, 182985, 236217, 393695, 866129, 1181085, 2598387, 4330645, 12991935]

約数ペア:

[(1, 12991935), (3, 4330645), (5, 2598387), (11, 1181085), (15, 866129), (33, 393695), (55, 236217), (71, 182985), (165, 78739), (213, 60995), (355, 36597), (781, 16635), (1065, 12199), (1109, 11715), (2343, 5545), (3327, 3905)]