19795275

素因数分解:

$3^2\times 5^2\times {\mathrm{97}}^1\times {\mathrm{907}}^1$

素因数の和:1020

約数の個数: 36

約数和(自身を含む): 35860552

約数和(自身を除く): 16065277

約数列:

[1, 3, 5, 9, 15, 25, 45, 75, 97, 225, 291, 485, 873, 907, 1455, 2425, 2721, 4365, 4535, 7275, 8163, 13605, 21825, 22675, 40815, 68025, 87979, 204075, 263937, 439895, 791811, 1319685, 2199475, 3959055, 6598425, 19795275]

約数ペア:

[(1, 19795275), (3, 6598425), (5, 3959055), (9, 2199475), (15, 1319685), (25, 791811), (45, 439895), (75, 263937), (97, 204075), (225, 87979), (291, 68025), (485, 40815), (873, 22675), (907, 21825), (1455, 13605), (2425, 8163), (2721, 7275), (4365, 4535)]