20948725

素因数分解:

$5^2\times 7^4\times {\mathrm{349}}^1$

素因数の和:387

約数の個数: 30

約数和(自身を含む): 30390850

約数和(自身を除く): 9442125

約数列:

[1, 5, 7, 25, 35, 49, 175, 245, 343, 349, 1225, 1715, 1745, 2401, 2443, 8575, 8725, 12005, 12215, 17101, 60025, 61075, 85505, 119707, 427525, 598535, 837949, 2992675, 4189745, 20948725]

約数ペア:

[(1, 20948725), (5, 4189745), (7, 2992675), (25, 837949), (35, 598535), (49, 427525), (175, 119707), (245, 85505), (343, 61075), (349, 60025), (1225, 17101), (1715, 12215), (1745, 12005), (2401, 8725), (2443, 8575)]