2491461

素因数分解:

$3^2\times 7^1\times {\mathrm{71}}^1\times {\mathrm{557}}^1$

素因数の和:641

約数の個数: 24

約数和(自身を含む): 4178304

約数和(自身を除く): 1686843

約数列:

[1, 3, 7, 9, 21, 63, 71, 213, 497, 557, 639, 1491, 1671, 3899, 4473, 5013, 11697, 35091, 39547, 118641, 276829, 355923, 830487, 2491461]

約数ペア:

[(1, 2491461), (3, 830487), (7, 355923), (9, 276829), (21, 118641), (63, 39547), (71, 35091), (213, 11697), (497, 5013), (557, 4473), (639, 3899), (1491, 1671)]