21054642

素因数分解:

$2^1\times 3^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{103}}^1\times {\mathrm{157}}^1$

素因数の和:303

約数の個数: 64

約数和(自身を含む): 50479104

約数和(自身を除く): 29424462

約数列:

[1, 2, 3, 6, 7, 14, 21, 31, 42, 62, 93, 103, 157, 186, 206, 217, 309, 314, 434, 471, 618, 651, 721, 942, 1099, 1302, 1442, 2163, 2198, 3193, 3297, 4326, 4867, 6386, 6594, 9579, 9734, 14601, 16171, 19158, 22351, 29202, 32342, 34069, 44702, 48513, 67053, 68138, 97026, 102207, 113197, 134106, 204414, 226394, 339591, 501301, 679182, 1002602, 1503903, 3007806, 3509107, 7018214, 10527321, 21054642]

約数ペア:

[(1, 21054642), (2, 10527321), (3, 7018214), (6, 3509107), (7, 3007806), (14, 1503903), (21, 1002602), (31, 679182), (42, 501301), (62, 339591), (93, 226394), (103, 204414), (157, 134106), (186, 113197), (206, 102207), (217, 97026), (309, 68138), (314, 67053), (434, 48513), (471, 44702), (618, 34069), (651, 32342), (721, 29202), (942, 22351), (1099, 19158), (1302, 16171), (1442, 14601), (2163, 9734), (2198, 9579), (3193, 6594), (3297, 6386), (4326, 4867)]