21869680

素因数分解:

$2^4\times 5^1\times 7^3\times {\mathrm{797}}^1$

素因数の和:831

約数の個数: 80

約数和(自身を含む): 59371200

約数和(自身を除く): 37501520

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, 797, 980, 1372, 1594, 1715, 1960, 2744, 3188, 3430, 3920, 3985, 5488, 5579, 6376, 6860, 7970, 11158, 12752, 13720, 15940, 22316, 27440, 27895, 31880, 39053, 44632, 55790, 63760, 78106, 89264, 111580, 156212, 195265, 223160, 273371, 312424, 390530, 446320, 546742, 624848, 781060, 1093484, 1366855, 1562120, 2186968, 2733710, 3124240, 4373936, 5467420, 10934840, 21869680]

約数ペア:

[(1, 21869680), (2, 10934840), (4, 5467420), (5, 4373936), (7, 3124240), (8, 2733710), (10, 2186968), (14, 1562120), (16, 1366855), (20, 1093484), (28, 781060), (35, 624848), (40, 546742), (49, 446320), (56, 390530), (70, 312424), (80, 273371), (98, 223160), (112, 195265), (140, 156212), (196, 111580), (245, 89264), (280, 78106), (343, 63760), (392, 55790), (490, 44632), (560, 39053), (686, 31880), (784, 27895), (797, 27440), (980, 22316), (1372, 15940), (1594, 13720), (1715, 12752), (1960, 11158), (2744, 7970), (3188, 6860), (3430, 6376), (3920, 5579), (3985, 5488)]