20487960

素因数分解:

$2^3\times 3^2\times 5^1\times {\mathrm{56911}}^1$

素因数の和:56928

約数の個数: 48

約数和(自身を含む): 66587040

約数和(自身を除く): 46099080

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 18, 20, 24, 30, 36, 40, 45, 60, 72, 90, 120, 180, 360, 56911, 113822, 170733, 227644, 284555, 341466, 455288, 512199, 569110, 682932, 853665, 1024398, 1138220, 1365864, 1707330, 2048796, 2276440, 2560995, 3414660, 4097592, 5121990, 6829320, 10243980, 20487960]

約数ペア:

[(1, 20487960), (2, 10243980), (3, 6829320), (4, 5121990), (5, 4097592), (6, 3414660), (8, 2560995), (9, 2276440), (10, 2048796), (12, 1707330), (15, 1365864), (18, 1138220), (20, 1024398), (24, 853665), (30, 682932), (36, 569110), (40, 512199), (45, 455288), (60, 341466), (72, 284555), (90, 227644), (120, 170733), (180, 113822), (360, 56911)]