20534020

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{78977}}^1$

素因数の和:78999

約数の個数: 24

約数和(自身を含む): 46439064

約数和(自身を除く): 25905044

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 78977, 157954, 315908, 394885, 789770, 1026701, 1579540, 2053402, 4106804, 5133505, 10267010, 20534020]

約数ペア:

[(1, 20534020), (2, 10267010), (4, 5133505), (5, 4106804), (10, 2053402), (13, 1579540), (20, 1026701), (26, 789770), (52, 394885), (65, 315908), (130, 157954), (260, 78977)]