20741385

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{251}}^1\times {\mathrm{787}}^1$

素因数の和:1053

約数の個数: 32

約数和(自身を含む): 38126592

約数和(自身を除く): 17385207

約数列:

[1, 3, 5, 7, 15, 21, 35, 105, 251, 753, 787, 1255, 1757, 2361, 3765, 3935, 5271, 5509, 8785, 11805, 16527, 26355, 27545, 82635, 197537, 592611, 987685, 1382759, 2963055, 4148277, 6913795, 20741385]

約数ペア:

[(1, 20741385), (3, 6913795), (5, 4148277), (7, 2963055), (15, 1382759), (21, 987685), (35, 592611), (105, 197537), (251, 82635), (753, 27545), (787, 26355), (1255, 16527), (1757, 11805), (2361, 8785), (3765, 5509), (3935, 5271)]