20719475

素因数分解:

$5^2\times 7^1\times {\mathrm{197}}^1\times {\mathrm{601}}^1$

素因数の和:815

約数の個数: 24

約数和(自身を含む): 29560608

約数和(自身を除く): 8841133

約数列:

[1, 5, 7, 25, 35, 175, 197, 601, 985, 1379, 3005, 4207, 4925, 6895, 15025, 21035, 34475, 105175, 118397, 591985, 828779, 2959925, 4143895, 20719475]

約数ペア:

[(1, 20719475), (5, 4143895), (7, 2959925), (25, 828779), (35, 591985), (175, 118397), (197, 105175), (601, 34475), (985, 21035), (1379, 15025), (3005, 6895), (4207, 4925)]