263289975

素因数分解:

$3^1\times 5^2\times {\mathrm{13}}^1\times {\mathrm{31}}^2\times {\mathrm{281}}^1$

素因数の和:369

約数の個数: 72

約数和(自身を含む): 486125136

約数和(自身を除く): 222835161

約数列:

[1, 3, 5, 13, 15, 25, 31, 39, 65, 75, 93, 155, 195, 281, 325, 403, 465, 775, 843, 961, 975, 1209, 1405, 2015, 2325, 2883, 3653, 4215, 4805, 6045, 7025, 8711, 10075, 10959, 12493, 14415, 18265, 21075, 24025, 26133, 30225, 37479, 43555, 54795, 62465, 72075, 91325, 113243, 130665, 187395, 217775, 270041, 273975, 312325, 339729, 566215, 653325, 810123, 936975, 1350205, 1698645, 2831075, 3510533, 4050615, 6751025, 8493225, 10531599, 17552665, 20253075, 52657995, 87763325, 263289975]

約数ペア:

[(1, 263289975), (3, 87763325), (5, 52657995), (13, 20253075), (15, 17552665), (25, 10531599), (31, 8493225), (39, 6751025), (65, 4050615), (75, 3510533), (93, 2831075), (155, 1698645), (195, 1350205), (281, 936975), (325, 810123), (403, 653325), (465, 566215), (775, 339729), (843, 312325), (961, 273975), (975, 270041), (1209, 217775), (1405, 187395), (2015, 130665), (2325, 113243), (2883, 91325), (3653, 72075), (4215, 62465), (4805, 54795), (6045, 43555), (7025, 37479), (8711, 30225), (10075, 26133), (10959, 24025), (12493, 21075), (14415, 18265)]