20548815

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{59}}^1\times {\mathrm{107}}^1$

素因数の和:212

約数の個数: 64

約数和(自身を含む): 39813120

約数和(自身を除く): 19264305

約数列:

[1, 3, 5, 7, 15, 21, 31, 35, 59, 93, 105, 107, 155, 177, 217, 295, 321, 413, 465, 535, 651, 749, 885, 1085, 1239, 1605, 1829, 2065, 2247, 3255, 3317, 3745, 5487, 6195, 6313, 9145, 9951, 11235, 12803, 16585, 18939, 23219, 27435, 31565, 38409, 44191, 49755, 64015, 69657, 94695, 116095, 132573, 192045, 195703, 220955, 348285, 587109, 662865, 978515, 1369921, 2935545, 4109763, 6849605, 20548815]

約数ペア:

[(1, 20548815), (3, 6849605), (5, 4109763), (7, 2935545), (15, 1369921), (21, 978515), (31, 662865), (35, 587109), (59, 348285), (93, 220955), (105, 195703), (107, 192045), (155, 132573), (177, 116095), (217, 94695), (295, 69657), (321, 64015), (413, 49755), (465, 44191), (535, 38409), (651, 31565), (749, 27435), (885, 23219), (1085, 18939), (1239, 16585), (1605, 12803), (1829, 11235), (2065, 9951), (2247, 9145), (3255, 6313), (3317, 6195), (3745, 5487)]