20678265

素因数分解:

$3^2\times 5^1\times {\mathrm{23}}^1\times {\mathrm{19979}}^1$

素因数の和:20013

約数の個数: 24

約数和(自身を含む): 37402560

約数和(自身を除く): 16724295

約数列:

[1, 3, 5, 9, 15, 23, 45, 69, 115, 207, 345, 1035, 19979, 59937, 99895, 179811, 299685, 459517, 899055, 1378551, 2297585, 4135653, 6892755, 20678265]

約数ペア:

[(1, 20678265), (3, 6892755), (5, 4135653), (9, 2297585), (15, 1378551), (23, 899055), (45, 459517), (69, 299685), (115, 179811), (207, 99895), (345, 59937), (1035, 19979)]