20927015

素因数分解:

$5^1\times {\mathrm{31}}^1\times {\mathrm{37}}^1\times {\mathrm{41}}^1\times {\mathrm{89}}^1$

素因数の和:203

約数の個数: 32

約数和(自身を含む): 27578880

約数和(自身を除く): 6651865

約数列:

[1, 5, 31, 37, 41, 89, 155, 185, 205, 445, 1147, 1271, 1517, 2759, 3293, 3649, 5735, 6355, 7585, 13795, 16465, 18245, 47027, 102083, 113119, 135013, 235135, 510415, 565595, 675065, 4185403, 20927015]

約数ペア:

[(1, 20927015), (5, 4185403), (31, 675065), (37, 565595), (41, 510415), (89, 235135), (155, 135013), (185, 113119), (205, 102083), (445, 47027), (1147, 18245), (1271, 16465), (1517, 13795), (2759, 7585), (3293, 6355), (3649, 5735)]