290205440

素因数分解:

$2^8\times 5^1\times 7^3\times {\mathrm{661}}^1$

素因数の和:703

約数の個数: 144

約数和(自身を含む): 811876800

約数和(自身を除く): 521671360

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 40, 49, 56, 64, 70, 80, 98, 112, 128, 140, 160, 196, 224, 245, 256, 280, 320, 343, 392, 448, 490, 560, 640, 661, 686, 784, 896, 980, 1120, 1280, 1322, 1372, 1568, 1715, 1792, 1960, 2240, 2644, 2744, 3136, 3305, 3430, 3920, 4480, 4627, 5288, 5488, 6272, 6610, 6860, 7840, 8960, 9254, 10576, 10976, 12544, 13220, 13720, 15680, 18508, 21152, 21952, 23135, 26440, 27440, 31360, 32389, 37016, 42304, 43904, 46270, 52880, 54880, 62720, 64778, 74032, 84608, 87808, 92540, 105760, 109760, 129556, 148064, 161945, 169216, 185080, 211520, 219520, 226723, 259112, 296128, 323890, 370160, 423040, 439040, 453446, 518224, 592256, 647780, 740320, 846080, 906892, 1036448, 1133615, 1184512, 1295560, 1480640, 1813784, 2072896, 2267230, 2591120, 2961280, 3627568, 4145792, 4534460, 5182240, 5922560, 7255136, 8291584, 9068920, 10364480, 14510272, 18137840, 20728960, 29020544, 36275680, 41457920, 58041088, 72551360, 145102720, 290205440]

約数ペア:

[(1, 290205440), (2, 145102720), (4, 72551360), (5, 58041088), (7, 41457920), (8, 36275680), (10, 29020544), (14, 20728960), (16, 18137840), (20, 14510272), (28, 10364480), (32, 9068920), (35, 8291584), (40, 7255136), (49, 5922560), (56, 5182240), (64, 4534460), (70, 4145792), (80, 3627568), (98, 2961280), (112, 2591120), (128, 2267230), (140, 2072896), (160, 1813784), (196, 1480640), (224, 1295560), (245, 1184512), (256, 1133615), (280, 1036448), (320, 906892), (343, 846080), (392, 740320), (448, 647780), (490, 592256), (560, 518224), (640, 453446), (661, 439040), (686, 423040), (784, 370160), (896, 323890), (980, 296128), (1120, 259112), (1280, 226723), (1322, 219520), (1372, 211520), (1568, 185080), (1715, 169216), (1792, 161945), (1960, 148064), (2240, 129556), (2644, 109760), (2744, 105760), (3136, 92540), (3305, 87808), (3430, 84608), (3920, 74032), (4480, 64778), (4627, 62720), (5288, 54880), (5488, 52880), (6272, 46270), (6610, 43904), (6860, 42304), (7840, 37016), (8960, 32389), (9254, 31360), (10576, 27440), (10976, 26440), (12544, 23135), (13220, 21952), (13720, 21152), (15680, 18508)]