28164495

素因数分解:

$3^1\times 5^1\times {\mathrm{17}}^2\times {\mathrm{73}}^1\times {\mathrm{89}}^1$

素因数の和:204

約数の個数: 48

約数和(自身を含む): 49070880

約数和(自身を除く): 20906385

約数列:

[1, 3, 5, 15, 17, 51, 73, 85, 89, 219, 255, 267, 289, 365, 445, 867, 1095, 1241, 1335, 1445, 1513, 3723, 4335, 4539, 6205, 6497, 7565, 18615, 19491, 21097, 22695, 25721, 32485, 63291, 77163, 97455, 105485, 110449, 128605, 316455, 331347, 385815, 552245, 1656735, 1877633, 5632899, 9388165, 28164495]

約数ペア:

[(1, 28164495), (3, 9388165), (5, 5632899), (15, 1877633), (17, 1656735), (51, 552245), (73, 385815), (85, 331347), (89, 316455), (219, 128605), (255, 110449), (267, 105485), (289, 97455), (365, 77163), (445, 63291), (867, 32485), (1095, 25721), (1241, 22695), (1335, 21097), (1445, 19491), (1513, 18615), (3723, 7565), (4335, 6497), (4539, 6205)]