28204880

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{32051}}^1$

素因数の和:32075

約数の個数: 40

約数和(自身を含む): 71540064

約数和(自身を除く): 43335184

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 40, 44, 55, 80, 88, 110, 176, 220, 440, 880, 32051, 64102, 128204, 160255, 256408, 320510, 352561, 512816, 641020, 705122, 1282040, 1410244, 1762805, 2564080, 2820488, 3525610, 5640976, 7051220, 14102440, 28204880]

約数ペア:

[(1, 28204880), (2, 14102440), (4, 7051220), (5, 5640976), (8, 3525610), (10, 2820488), (11, 2564080), (16, 1762805), (20, 1410244), (22, 1282040), (40, 705122), (44, 641020), (55, 512816), (80, 352561), (88, 320510), (110, 256408), (176, 160255), (220, 128204), (440, 64102), (880, 32051)]