219680920

素因数分解:

$2^3\times 5^1\times {\mathrm{523}}^1\times {\mathrm{10501}}^1$

素因数の和:11035

約数の個数: 32

約数和(自身を含む): 495274320

約数和(自身を除く): 275593400

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 523, 1046, 2092, 2615, 4184, 5230, 10460, 10501, 20920, 21002, 42004, 52505, 84008, 105010, 210020, 420040, 5492023, 10984046, 21968092, 27460115, 43936184, 54920230, 109840460, 219680920]

約数ペア:

[(1, 219680920), (2, 109840460), (4, 54920230), (5, 43936184), (8, 27460115), (10, 21968092), (20, 10984046), (40, 5492023), (523, 420040), (1046, 210020), (2092, 105010), (2615, 84008), (4184, 52505), (5230, 42004), (10460, 21002), (10501, 20920)]