20555128

素因数分解:

$2^3\times {\mathrm{11}}^1\times {\mathrm{37}}^1\times {\mathrm{59}}^1\times {\mathrm{107}}^1$

素因数の和:220

約数の個数: 64

約数和(自身を含む): 44323200

約数和(自身を除く): 23768072

約数列:

[1, 2, 4, 8, 11, 22, 37, 44, 59, 74, 88, 107, 118, 148, 214, 236, 296, 407, 428, 472, 649, 814, 856, 1177, 1298, 1628, 2183, 2354, 2596, 3256, 3959, 4366, 4708, 5192, 6313, 7918, 8732, 9416, 12626, 15836, 17464, 24013, 25252, 31672, 43549, 48026, 50504, 69443, 87098, 96052, 138886, 174196, 192104, 233581, 277772, 348392, 467162, 555544, 934324, 1868648, 2569391, 5138782, 10277564, 20555128]

約数ペア:

[(1, 20555128), (2, 10277564), (4, 5138782), (8, 2569391), (11, 1868648), (22, 934324), (37, 555544), (44, 467162), (59, 348392), (74, 277772), (88, 233581), (107, 192104), (118, 174196), (148, 138886), (214, 96052), (236, 87098), (296, 69443), (407, 50504), (428, 48026), (472, 43549), (649, 31672), (814, 25252), (856, 24013), (1177, 17464), (1298, 15836), (1628, 12626), (2183, 9416), (2354, 8732), (2596, 7918), (3256, 6313), (3959, 5192), (4366, 4708)]