21491360

素因数分解:

$2^5\times 5^1\times {\mathrm{11}}^1\times {\mathrm{12211}}^1$

素因数の和:12237

約数の個数: 48

約数和(自身を含む): 55393632

約数和(自身を除く): 33902272

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 32, 40, 44, 55, 80, 88, 110, 160, 176, 220, 352, 440, 880, 1760, 12211, 24422, 48844, 61055, 97688, 122110, 134321, 195376, 244220, 268642, 390752, 488440, 537284, 671605, 976880, 1074568, 1343210, 1953760, 2149136, 2686420, 4298272, 5372840, 10745680, 21491360]

約数ペア:

[(1, 21491360), (2, 10745680), (4, 5372840), (5, 4298272), (8, 2686420), (10, 2149136), (11, 1953760), (16, 1343210), (20, 1074568), (22, 976880), (32, 671605), (40, 537284), (44, 488440), (55, 390752), (80, 268642), (88, 244220), (110, 195376), (160, 134321), (176, 122110), (220, 97688), (352, 61055), (440, 48844), (880, 24422), (1760, 12211)]