25280080

素因数分解:

$2^4\times 5^1\times 7^2\times {\mathrm{6449}}^1$

素因数の和:6476

約数の個数: 60

約数和(自身を含む): 68382900

約数和(自身を除く): 43102820

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, 392, 490, 560, 784, 980, 1960, 3920, 6449, 12898, 25796, 32245, 45143, 51592, 64490, 90286, 103184, 128980, 180572, 225715, 257960, 316001, 361144, 451430, 515920, 632002, 722288, 902860, 1264004, 1580005, 1805720, 2528008, 3160010, 3611440, 5056016, 6320020, 12640040, 25280080]

約数ペア:

[(1, 25280080), (2, 12640040), (4, 6320020), (5, 5056016), (7, 3611440), (8, 3160010), (10, 2528008), (14, 1805720), (16, 1580005), (20, 1264004), (28, 902860), (35, 722288), (40, 632002), (49, 515920), (56, 451430), (70, 361144), (80, 316001), (98, 257960), (112, 225715), (140, 180572), (196, 128980), (245, 103184), (280, 90286), (392, 64490), (490, 51592), (560, 45143), (784, 32245), (980, 25796), (1960, 12898), (3920, 6449)]