19900960

素因数分解:

$2^5\times 5^1\times {\mathrm{29}}^1\times {\mathrm{4289}}^1$

素因数の和:4333

約数の個数: 48

約数和(自身を含む): 48648600

約数和(自身を除く): 28747640

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 29, 32, 40, 58, 80, 116, 145, 160, 232, 290, 464, 580, 928, 1160, 2320, 4289, 4640, 8578, 17156, 21445, 34312, 42890, 68624, 85780, 124381, 137248, 171560, 248762, 343120, 497524, 621905, 686240, 995048, 1243810, 1990096, 2487620, 3980192, 4975240, 9950480, 19900960]

約数ペア:

[(1, 19900960), (2, 9950480), (4, 4975240), (5, 3980192), (8, 2487620), (10, 1990096), (16, 1243810), (20, 995048), (29, 686240), (32, 621905), (40, 497524), (58, 343120), (80, 248762), (116, 171560), (145, 137248), (160, 124381), (232, 85780), (290, 68624), (464, 42890), (580, 34312), (928, 21445), (1160, 17156), (2320, 8578), (4289, 4640)]