20820680

素因数分解:

$2^3\times 5^1\times {\mathrm{229}}^1\times {\mathrm{2273}}^1$

素因数の和:2513

約数の個数: 32

約数和(自身を含む): 47071800

約数和(自身を除く): 26251120

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 229, 458, 916, 1145, 1832, 2273, 2290, 4546, 4580, 9092, 9160, 11365, 18184, 22730, 45460, 90920, 520517, 1041034, 2082068, 2602585, 4164136, 5205170, 10410340, 20820680]

約数ペア:

[(1, 20820680), (2, 10410340), (4, 5205170), (5, 4164136), (8, 2602585), (10, 2082068), (20, 1041034), (40, 520517), (229, 90920), (458, 45460), (916, 22730), (1145, 18184), (1832, 11365), (2273, 9160), (2290, 9092), (4546, 4580)]