21272097

素因数分解:

$3^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{71}}^1\times {\mathrm{1297}}^1$

素因数の和:1389

約数の個数: 32

約数和(自身を含む): 35887104

約数和(自身を除く): 14615007

約数列:

[1, 3, 7, 11, 21, 33, 71, 77, 213, 231, 497, 781, 1297, 1491, 2343, 3891, 5467, 9079, 14267, 16401, 27237, 42801, 92087, 99869, 276261, 299607, 644609, 1012957, 1933827, 3038871, 7090699, 21272097]

約数ペア:

[(1, 21272097), (3, 7090699), (7, 3038871), (11, 1933827), (21, 1012957), (33, 644609), (71, 299607), (77, 276261), (213, 99869), (231, 92087), (497, 42801), (781, 27237), (1297, 16401), (1491, 14267), (2343, 9079), (3891, 5467)]