21037408

素因数分解:

$2^5\times 7^1\times {\mathrm{19}}^1\times {\mathrm{4943}}^1$

素因数の和:4979

約数の個数: 48

約数和(自身を含む): 49835520

約数和(自身を除く): 28798112

約数列:

[1, 2, 4, 7, 8, 14, 16, 19, 28, 32, 38, 56, 76, 112, 133, 152, 224, 266, 304, 532, 608, 1064, 2128, 4256, 4943, 9886, 19772, 34601, 39544, 69202, 79088, 93917, 138404, 158176, 187834, 276808, 375668, 553616, 657419, 751336, 1107232, 1314838, 1502672, 2629676, 3005344, 5259352, 10518704, 21037408]

約数ペア:

[(1, 21037408), (2, 10518704), (4, 5259352), (7, 3005344), (8, 2629676), (14, 1502672), (16, 1314838), (19, 1107232), (28, 751336), (32, 657419), (38, 553616), (56, 375668), (76, 276808), (112, 187834), (133, 158176), (152, 138404), (224, 93917), (266, 79088), (304, 69202), (532, 39544), (608, 34601), (1064, 19772), (2128, 9886), (4256, 4943)]