204455440

素因数分解:

$2^4\times 5^1\times 7^3\times {\mathrm{7451}}^1$

素因数の和:7485

約数の個数: 80

約数和(自身を含む): 554428800

約数和(自身を除く): 349973360

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 49, 56, 70, 80, 98, 112, 140, 196, 245, 280, 343, 392, 490, 560, 686, 784, 980, 1372, 1715, 1960, 2744, 3430, 3920, 5488, 6860, 7451, 13720, 14902, 27440, 29804, 37255, 52157, 59608, 74510, 104314, 119216, 149020, 208628, 260785, 298040, 365099, 417256, 521570, 596080, 730198, 834512, 1043140, 1460396, 1825495, 2086280, 2555693, 2920792, 3650990, 4172560, 5111386, 5841584, 7301980, 10222772, 12778465, 14603960, 20445544, 25556930, 29207920, 40891088, 51113860, 102227720, 204455440]

約数ペア:

[(1, 204455440), (2, 102227720), (4, 51113860), (5, 40891088), (7, 29207920), (8, 25556930), (10, 20445544), (14, 14603960), (16, 12778465), (20, 10222772), (28, 7301980), (35, 5841584), (40, 5111386), (49, 4172560), (56, 3650990), (70, 2920792), (80, 2555693), (98, 2086280), (112, 1825495), (140, 1460396), (196, 1043140), (245, 834512), (280, 730198), (343, 596080), (392, 521570), (490, 417256), (560, 365099), (686, 298040), (784, 260785), (980, 208628), (1372, 149020), (1715, 119216), (1960, 104314), (2744, 74510), (3430, 59608), (3920, 52157), (5488, 37255), (6860, 29804), (7451, 27440), (13720, 14902)]