20456307

素因数分解:

$3^4\times {\mathrm{71}}^1\times {\mathrm{3557}}^1$

素因数の和:3640

約数の個数: 20

約数和(自身を含む): 30997296

約数和(自身を除く): 10540989

約数列:

[1, 3, 9, 27, 71, 81, 213, 639, 1917, 3557, 5751, 10671, 32013, 96039, 252547, 288117, 757641, 2272923, 6818769, 20456307]

約数ペア:

[(1, 20456307), (3, 6818769), (9, 2272923), (27, 757641), (71, 288117), (81, 252547), (213, 96039), (639, 32013), (1917, 10671), (3557, 5751)]