21067599

素因数分解:

$3^1\times 7^2\times {\mathrm{19}}^2\times {\mathrm{397}}^1$

素因数の和:452

約数の個数: 36

約数和(自身を含む): 34573464

約数和(自身を除く): 13505865

約数列:

[1, 3, 7, 19, 21, 49, 57, 133, 147, 361, 397, 399, 931, 1083, 1191, 2527, 2779, 2793, 7543, 7581, 8337, 17689, 19453, 22629, 52801, 53067, 58359, 143317, 158403, 369607, 429951, 1003219, 1108821, 3009657, 7022533, 21067599]

約数ペア:

[(1, 21067599), (3, 7022533), (7, 3009657), (19, 1108821), (21, 1003219), (49, 429951), (57, 369607), (133, 158403), (147, 143317), (361, 58359), (397, 53067), (399, 52801), (931, 22629), (1083, 19453), (1191, 17689), (2527, 8337), (2779, 7581), (2793, 7543)]