20408571

素因数分解:

$3^3\times {\mathrm{31}}^1\times {\mathrm{37}}^1\times {\mathrm{659}}^1$

素因数の和:736

約数の個数: 32

約数和(自身を含む): 32102400

約数和(自身を除く): 11693829

約数列:

[1, 3, 9, 27, 31, 37, 93, 111, 279, 333, 659, 837, 999, 1147, 1977, 3441, 5931, 10323, 17793, 20429, 24383, 30969, 61287, 73149, 183861, 219447, 551583, 658341, 755873, 2267619, 6802857, 20408571]

約数ペア:

[(1, 20408571), (3, 6802857), (9, 2267619), (27, 755873), (31, 658341), (37, 551583), (93, 219447), (111, 183861), (279, 73149), (333, 61287), (659, 30969), (837, 24383), (999, 20429), (1147, 17793), (1977, 10323), (3441, 5931)]