21465795

素因数分解:

$3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{53}}^1\times {\mathrm{67}}^1$

素因数の和:172

約数の個数: 64

約数和(自身を含む): 39481344

約数和(自身を除く): 18015549

約数列:

[1, 3, 5, 13, 15, 31, 39, 53, 65, 67, 93, 155, 159, 195, 201, 265, 335, 403, 465, 689, 795, 871, 1005, 1209, 1643, 2015, 2067, 2077, 2613, 3445, 3551, 4355, 4929, 6045, 6231, 8215, 10335, 10385, 10653, 13065, 17755, 21359, 24645, 27001, 31155, 46163, 53265, 64077, 81003, 106795, 110081, 135005, 138489, 230815, 320385, 330243, 405015, 550405, 692445, 1431053, 1651215, 4293159, 7155265, 21465795]

約数ペア:

[(1, 21465795), (3, 7155265), (5, 4293159), (13, 1651215), (15, 1431053), (31, 692445), (39, 550405), (53, 405015), (65, 330243), (67, 320385), (93, 230815), (155, 138489), (159, 135005), (195, 110081), (201, 106795), (265, 81003), (335, 64077), (403, 53265), (465, 46163), (689, 31155), (795, 27001), (871, 24645), (1005, 21359), (1209, 17755), (1643, 13065), (2015, 10653), (2067, 10385), (2077, 10335), (2613, 8215), (3445, 6231), (3551, 6045), (4355, 4929)]