72780315

素因数分解:

$3^1\times 5^1\times {\mathrm{17}}^2\times {\mathrm{103}}^1\times {\mathrm{163}}^1$

素因数の和:308

約数の個数: 48

約数和(自身を含む): 125668608

約数和(自身を除く): 52888293

約数列:

[1, 3, 5, 15, 17, 51, 85, 103, 163, 255, 289, 309, 489, 515, 815, 867, 1445, 1545, 1751, 2445, 2771, 4335, 5253, 8313, 8755, 13855, 16789, 26265, 29767, 41565, 47107, 50367, 83945, 89301, 141321, 148835, 235535, 251835, 285413, 446505, 706605, 856239, 1427065, 4281195, 4852021, 14556063, 24260105, 72780315]

約数ペア:

[(1, 72780315), (3, 24260105), (5, 14556063), (15, 4852021), (17, 4281195), (51, 1427065), (85, 856239), (103, 706605), (163, 446505), (255, 285413), (289, 251835), (309, 235535), (489, 148835), (515, 141321), (815, 89301), (867, 83945), (1445, 50367), (1545, 47107), (1751, 41565), (2445, 29767), (2771, 26265), (4335, 16789), (5253, 13855), (8313, 8755)]