201717257

素因数分解:

$7^1\times {\mathrm{17}}^1\times {\mathrm{43}}^1\times {\mathrm{79}}^1\times {\mathrm{499}}^1$

素因数の和:645

約数の個数: 32

約数和(自身を含む): 253440000

約数和(自身を除く): 51722743

約数列:

[1, 7, 17, 43, 79, 119, 301, 499, 553, 731, 1343, 3397, 3493, 5117, 8483, 9401, 21457, 23779, 39421, 57749, 59381, 150199, 275947, 364769, 404243, 670157, 1695103, 2553383, 4691099, 11865721, 28816751, 201717257]

約数ペア:

[(1, 201717257), (7, 28816751), (17, 11865721), (43, 4691099), (79, 2553383), (119, 1695103), (301, 670157), (499, 404243), (553, 364769), (731, 275947), (1343, 150199), (3397, 59381), (3493, 57749), (5117, 39421), (8483, 23779), (9401, 21457)]