640227960

素因数分解:

$2^3\times 3^2\times 5^1\times {\mathrm{1778411}}^1$

素因数の和:1778428

約数の個数: 48

約数和(自身を含む): 2080742040

約数和(自身を除く): 1440514080

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, 1778411, 3556822, 5335233, 7113644, 8892055, 10670466, 14227288, 16005699, 17784110, 21340932, 26676165, 32011398, 35568220, 42681864, 53352330, 64022796, 71136440, 80028495, 106704660, 128045592, 160056990, 213409320, 320113980, 640227960]

約数ペア:

[(1, 640227960), (2, 320113980), (3, 213409320), (4, 160056990), (5, 128045592), (6, 106704660), (8, 80028495), (9, 71136440), (10, 64022796), (12, 53352330), (15, 42681864), (18, 35568220), (20, 32011398), (24, 26676165), (30, 21340932), (36, 17784110), (40, 16005699), (45, 14227288), (60, 10670466), (72, 8892055), (90, 7113644), (120, 5335233), (180, 3556822), (360, 1778411)]