21000560

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{37501}}^1$

素因数の和:37521

約数の個数: 40

約数和(自身を含む): 55802976

約数和(自身を除く): 34802416

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 70, 80, 112, 140, 280, 560, 37501, 75002, 150004, 187505, 262507, 300008, 375010, 525014, 600016, 750020, 1050028, 1312535, 1500040, 2100056, 2625070, 3000080, 4200112, 5250140, 10500280, 21000560]

約数ペア:

[(1, 21000560), (2, 10500280), (4, 5250140), (5, 4200112), (7, 3000080), (8, 2625070), (10, 2100056), (14, 1500040), (16, 1312535), (20, 1050028), (28, 750020), (35, 600016), (40, 525014), (56, 375010), (70, 300008), (80, 262507), (112, 187505), (140, 150004), (280, 75002), (560, 37501)]