20912778

素因数分解:

$2^1\times 3^2\times {\mathrm{349}}^1\times {\mathrm{3329}}^1$

素因数の和:3686

約数の個数: 24

約数和(自身を含む): 45454500

約数和(自身を除く): 24541722

約数列:

[1, 2, 3, 6, 9, 18, 349, 698, 1047, 2094, 3141, 3329, 6282, 6658, 9987, 19974, 29961, 59922, 1161821, 2323642, 3485463, 6970926, 10456389, 20912778]

約数ペア:

[(1, 20912778), (2, 10456389), (3, 6970926), (6, 3485463), (9, 2323642), (18, 1161821), (349, 59922), (698, 29961), (1047, 19974), (2094, 9987), (3141, 6658), (3329, 6282)]