20387235

素因数分解:

$3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{157}}^1\times {\mathrm{787}}^1$

素因数の和:963

約数の個数: 32

約数和(自身を含む): 35857152

約数和(自身を除く): 15469917

約数列:

[1, 3, 5, 11, 15, 33, 55, 157, 165, 471, 785, 787, 1727, 2355, 2361, 3935, 5181, 8635, 8657, 11805, 25905, 25971, 43285, 123559, 129855, 370677, 617795, 1359149, 1853385, 4077447, 6795745, 20387235]

約数ペア:

[(1, 20387235), (3, 6795745), (5, 4077447), (11, 1853385), (15, 1359149), (33, 617795), (55, 370677), (157, 129855), (165, 123559), (471, 43285), (785, 25971), (787, 25905), (1727, 11805), (2355, 8657), (2361, 8635), (3935, 5181)]