201781245

素因数分解:

$3^1\times 5^1\times {\mathrm{17}}^2\times {\mathrm{89}}^1\times {\mathrm{523}}^1$

素因数の和:654

約数の個数: 48

約数和(自身を含む): 347474880

約数和(自身を除く): 145693635

約数列:

[1, 3, 5, 15, 17, 51, 85, 89, 255, 267, 289, 445, 523, 867, 1335, 1445, 1513, 1569, 2615, 4335, 4539, 7565, 7845, 8891, 22695, 25721, 26673, 44455, 46547, 77163, 128605, 133365, 139641, 151147, 232735, 385815, 453441, 698205, 755735, 791299, 2267205, 2373897, 3956495, 11869485, 13452083, 40356249, 67260415, 201781245]

約数ペア:

[(1, 201781245), (3, 67260415), (5, 40356249), (15, 13452083), (17, 11869485), (51, 3956495), (85, 2373897), (89, 2267205), (255, 791299), (267, 755735), (289, 698205), (445, 453441), (523, 385815), (867, 232735), (1335, 151147), (1445, 139641), (1513, 133365), (1569, 128605), (2615, 77163), (4335, 46547), (4539, 44455), (7565, 26673), (7845, 25721), (8891, 22695)]