21761280

素因数分解:

$2^8\times 3^2\times 5^1\times {\mathrm{1889}}^1$

素因数の和:1916

約数の個数: 108

約数和(自身を含む): 75331620

約数和(自身を除く): 53570340

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 30, 32, 36, 40, 45, 48, 60, 64, 72, 80, 90, 96, 120, 128, 144, 160, 180, 192, 240, 256, 288, 320, 360, 384, 480, 576, 640, 720, 768, 960, 1152, 1280, 1440, 1889, 1920, 2304, 2880, 3778, 3840, 5667, 5760, 7556, 9445, 11334, 11520, 15112, 17001, 18890, 22668, 28335, 30224, 34002, 37780, 45336, 56670, 60448, 68004, 75560, 85005, 90672, 113340, 120896, 136008, 151120, 170010, 181344, 226680, 241792, 272016, 302240, 340020, 362688, 453360, 483584, 544032, 604480, 680040, 725376, 906720, 1088064, 1208960, 1360080, 1450752, 1813440, 2176128, 2417920, 2720160, 3626880, 4352256, 5440320, 7253760, 10880640, 21761280]

約数ペア:

[(1, 21761280), (2, 10880640), (3, 7253760), (4, 5440320), (5, 4352256), (6, 3626880), (8, 2720160), (9, 2417920), (10, 2176128), (12, 1813440), (15, 1450752), (16, 1360080), (18, 1208960), (20, 1088064), (24, 906720), (30, 725376), (32, 680040), (36, 604480), (40, 544032), (45, 483584), (48, 453360), (60, 362688), (64, 340020), (72, 302240), (80, 272016), (90, 241792), (96, 226680), (120, 181344), (128, 170010), (144, 151120), (160, 136008), (180, 120896), (192, 113340), (240, 90672), (256, 85005), (288, 75560), (320, 68004), (360, 60448), (384, 56670), (480, 45336), (576, 37780), (640, 34002), (720, 30224), (768, 28335), (960, 22668), (1152, 18890), (1280, 17001), (1440, 15112), (1889, 11520), (1920, 11334), (2304, 9445), (2880, 7556), (3778, 5760), (3840, 5667)]