20871746

素因数分解:

$2^1\times 7^2\times {\mathrm{89}}^1\times {\mathrm{2393}}^1$

素因数の和:2498

約数の個数: 24

約数和(自身を含む): 36843660

約数和(自身を除く): 15971914

約数列:

[1, 2, 7, 14, 49, 89, 98, 178, 623, 1246, 2393, 4361, 4786, 8722, 16751, 33502, 117257, 212977, 234514, 425954, 1490839, 2981678, 10435873, 20871746]

約数ペア:

[(1, 20871746), (2, 10435873), (7, 2981678), (14, 1490839), (49, 425954), (89, 234514), (98, 212977), (178, 117257), (623, 33502), (1246, 16751), (2393, 8722), (4361, 4786)]