21456165

素因数分解:

$3^1\times 5^1\times {\mathrm{1051}}^1\times {\mathrm{1361}}^1$

素因数の和:2420

約数の個数: 16

約数和(自身を含む): 34387776

約数和(自身を除く): 12931611

約数列:

[1, 3, 5, 15, 1051, 1361, 3153, 4083, 5255, 6805, 15765, 20415, 1430411, 4291233, 7152055, 21456165]

約数ペア:

[(1, 21456165), (3, 7152055), (5, 4291233), (15, 1430411), (1051, 20415), (1361, 15765), (3153, 6805), (4083, 5255)]