320219860

素因数分解:

$2^2\times 5^1\times {\mathrm{139}}^1\times {\mathrm{229}}^1\times {\mathrm{503}}^1$

素因数の和:880

約数の個数: 48

約数和(自身を含む): 681609600

約数和(自身を除く): 361389740

約数列:

[1, 2, 4, 5, 10, 20, 139, 229, 278, 458, 503, 556, 695, 916, 1006, 1145, 1390, 2012, 2290, 2515, 2780, 4580, 5030, 10060, 31831, 63662, 69917, 115187, 127324, 139834, 159155, 230374, 279668, 318310, 349585, 460748, 575935, 636620, 699170, 1151870, 1398340, 2303740, 16010993, 32021986, 64043972, 80054965, 160109930, 320219860]

約数ペア:

[(1, 320219860), (2, 160109930), (4, 80054965), (5, 64043972), (10, 32021986), (20, 16010993), (139, 2303740), (229, 1398340), (278, 1151870), (458, 699170), (503, 636620), (556, 575935), (695, 460748), (916, 349585), (1006, 318310), (1145, 279668), (1390, 230374), (2012, 159155), (2290, 139834), (2515, 127324), (2780, 115187), (4580, 69917), (5030, 63662), (10060, 31831)]