20783049

素因数分解:

$3^1\times 7^1\times {\mathrm{53}}^1\times {\mathrm{71}}^1\times {\mathrm{263}}^1$

素因数の和:397

約数の個数: 32

約数和(自身を含む): 32845824

約数和(自身を除く): 12062775

約数列:

[1, 3, 7, 21, 53, 71, 159, 213, 263, 371, 497, 789, 1113, 1491, 1841, 3763, 5523, 11289, 13939, 18673, 26341, 41817, 56019, 79023, 97573, 130711, 292719, 392133, 989669, 2969007, 6927683, 20783049]

約数ペア:

[(1, 20783049), (3, 6927683), (7, 2969007), (21, 989669), (53, 392133), (71, 292719), (159, 130711), (213, 97573), (263, 79023), (371, 56019), (497, 41817), (789, 26341), (1113, 18673), (1491, 13939), (1841, 11289), (3763, 5523)]