21149784

素因数分解:

$2^3\times 3^2\times {\mathrm{157}}^1\times {\mathrm{1871}}^1$

素因数の和:2040

約数の個数: 48

約数和(自身を含む): 57676320

約数和(自身を除く): 36526536

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 18, 24, 36, 72, 157, 314, 471, 628, 942, 1256, 1413, 1871, 1884, 2826, 3742, 3768, 5613, 5652, 7484, 11226, 11304, 14968, 16839, 22452, 33678, 44904, 67356, 134712, 293747, 587494, 881241, 1174988, 1762482, 2349976, 2643723, 3524964, 5287446, 7049928, 10574892, 21149784]

約数ペア:

[(1, 21149784), (2, 10574892), (3, 7049928), (4, 5287446), (6, 3524964), (8, 2643723), (9, 2349976), (12, 1762482), (18, 1174988), (24, 881241), (36, 587494), (72, 293747), (157, 134712), (314, 67356), (471, 44904), (628, 33678), (942, 22452), (1256, 16839), (1413, 14968), (1871, 11304), (1884, 11226), (2826, 7484), (3742, 5652), (3768, 5613)]