77249420

素因数分解:

$2^2\times 5^1\times {\mathrm{71}}^1\times {\mathrm{54401}}^1$

素因数の和:54481

約数の個数: 24

約数和(自身を含む): 164511648

約数和(自身を除く): 87262228

約数列:

[1, 2, 4, 5, 10, 20, 71, 142, 284, 355, 710, 1420, 54401, 108802, 217604, 272005, 544010, 1088020, 3862471, 7724942, 15449884, 19312355, 38624710, 77249420]

約数ペア:

[(1, 77249420), (2, 38624710), (4, 19312355), (5, 15449884), (10, 7724942), (20, 3862471), (71, 1088020), (142, 544010), (284, 272005), (355, 217604), (710, 108802), (1420, 54401)]