256475005

素因数分解:

$5^1\times {\mathrm{17}}^1\times {\mathrm{43}}^1\times {\mathrm{47}}^1\times {\mathrm{1493}}^1$

素因数の和:1605

約数の個数: 32

約数和(自身を含む): 340775424

約数和(自身を除く): 84300419

約数列:

[1, 5, 17, 43, 47, 85, 215, 235, 731, 799, 1493, 2021, 3655, 3995, 7465, 10105, 25381, 34357, 64199, 70171, 126905, 171785, 320995, 350855, 1091383, 1192907, 3017353, 5456915, 5964535, 15086765, 51295001, 256475005]

約数ペア:

[(1, 256475005), (5, 51295001), (17, 15086765), (43, 5964535), (47, 5456915), (85, 3017353), (215, 1192907), (235, 1091383), (731, 350855), (799, 320995), (1493, 171785), (2021, 126905), (3655, 70171), (3995, 64199), (7465, 34357), (10105, 25381)]