20155625

素因数分解:

$5^4\times 7^1\times {\mathrm{17}}^1\times {\mathrm{271}}^1$

素因数の和:315

約数の個数: 40

約数和(自身を含む): 30590208

約数和(自身を除く): 10434583

約数列:

[1, 5, 7, 17, 25, 35, 85, 119, 125, 175, 271, 425, 595, 625, 875, 1355, 1897, 2125, 2975, 4375, 4607, 6775, 9485, 10625, 14875, 23035, 32249, 33875, 47425, 74375, 115175, 161245, 169375, 237125, 575875, 806225, 1185625, 2879375, 4031125, 20155625]

約数ペア:

[(1, 20155625), (5, 4031125), (7, 2879375), (17, 1185625), (25, 806225), (35, 575875), (85, 237125), (119, 169375), (125, 161245), (175, 115175), (271, 74375), (425, 47425), (595, 33875), (625, 32249), (875, 23035), (1355, 14875), (1897, 10625), (2125, 9485), (2975, 6775), (4375, 4607)]