21249732

素因数分解:

$2^2\times 3^1\times 7^2\times {\mathrm{71}}^1\times {\mathrm{509}}^1$

素因数の和:601

約数の個数: 72

約数和(自身を含む): 58605120

約数和(自身を除く): 37355388

約数列:

[1, 2, 3, 4, 6, 7, 12, 14, 21, 28, 42, 49, 71, 84, 98, 142, 147, 196, 213, 284, 294, 426, 497, 509, 588, 852, 994, 1018, 1491, 1527, 1988, 2036, 2982, 3054, 3479, 3563, 5964, 6108, 6958, 7126, 10437, 10689, 13916, 14252, 20874, 21378, 24941, 36139, 41748, 42756, 49882, 72278, 74823, 99764, 108417, 144556, 149646, 216834, 252973, 299292, 433668, 505946, 758919, 1011892, 1517838, 1770811, 3035676, 3541622, 5312433, 7083244, 10624866, 21249732]

約数ペア:

[(1, 21249732), (2, 10624866), (3, 7083244), (4, 5312433), (6, 3541622), (7, 3035676), (12, 1770811), (14, 1517838), (21, 1011892), (28, 758919), (42, 505946), (49, 433668), (71, 299292), (84, 252973), (98, 216834), (142, 149646), (147, 144556), (196, 108417), (213, 99764), (284, 74823), (294, 72278), (426, 49882), (497, 42756), (509, 41748), (588, 36139), (852, 24941), (994, 21378), (1018, 20874), (1491, 14252), (1527, 13916), (1988, 10689), (2036, 10437), (2982, 7126), (3054, 6958), (3479, 6108), (3563, 5964)]