21471849

素因数分解:

$3^2\times 7^2\times {\mathrm{181}}^1\times {\mathrm{269}}^1$

素因数の和:470

約数の個数: 36

約数和(自身を含む): 36412740

約数和(自身を除く): 14940891

約数列:

[1, 3, 7, 9, 21, 49, 63, 147, 181, 269, 441, 543, 807, 1267, 1629, 1883, 2421, 3801, 5649, 8869, 11403, 13181, 16947, 26607, 39543, 48689, 79821, 118629, 146067, 340823, 438201, 1022469, 2385761, 3067407, 7157283, 21471849]

約数ペア:

[(1, 21471849), (3, 7157283), (7, 3067407), (9, 2385761), (21, 1022469), (49, 438201), (63, 340823), (147, 146067), (181, 118629), (269, 79821), (441, 48689), (543, 39543), (807, 26607), (1267, 16947), (1629, 13181), (1883, 11403), (2421, 8869), (3801, 5649)]