21128856

素因数分解:

$2^3\times 3^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{4057}}^1$

素因数の和:4104

約数の個数: 64

約数和(自身を含む): 62330880

約数和(自身を除く): 41202024

約数列:

[1, 2, 3, 4, 6, 7, 8, 12, 14, 21, 24, 28, 31, 42, 56, 62, 84, 93, 124, 168, 186, 217, 248, 372, 434, 651, 744, 868, 1302, 1736, 2604, 4057, 5208, 8114, 12171, 16228, 24342, 28399, 32456, 48684, 56798, 85197, 97368, 113596, 125767, 170394, 227192, 251534, 340788, 377301, 503068, 681576, 754602, 880369, 1006136, 1509204, 1760738, 2641107, 3018408, 3521476, 5282214, 7042952, 10564428, 21128856]

約数ペア:

[(1, 21128856), (2, 10564428), (3, 7042952), (4, 5282214), (6, 3521476), (7, 3018408), (8, 2641107), (12, 1760738), (14, 1509204), (21, 1006136), (24, 880369), (28, 754602), (31, 681576), (42, 503068), (56, 377301), (62, 340788), (84, 251534), (93, 227192), (124, 170394), (168, 125767), (186, 113596), (217, 97368), (248, 85197), (372, 56798), (434, 48684), (651, 32456), (744, 28399), (868, 24342), (1302, 16228), (1736, 12171), (2604, 8114), (4057, 5208)]