21145510

素因数分解:

$2^1\times 5^1\times {\mathrm{23}}^1\times {\mathrm{89}}^1\times {\mathrm{1033}}^1$

素因数の和:1152

約数の個数: 32

約数和(自身を含む): 40201920

約数和(自身を除く): 19056410

約数列:

[1, 2, 5, 10, 23, 46, 89, 115, 178, 230, 445, 890, 1033, 2047, 2066, 4094, 5165, 10235, 10330, 20470, 23759, 47518, 91937, 118795, 183874, 237590, 459685, 919370, 2114551, 4229102, 10572755, 21145510]

約数ペア:

[(1, 21145510), (2, 10572755), (5, 4229102), (10, 2114551), (23, 919370), (46, 459685), (89, 237590), (115, 183874), (178, 118795), (230, 91937), (445, 47518), (890, 23759), (1033, 20470), (2047, 10330), (2066, 10235), (4094, 5165)]