20681379

素因数分解:

$3^3\times {\mathrm{29}}^1\times {\mathrm{61}}^1\times {\mathrm{433}}^1$

素因数の和:532

約数の個数: 32

約数和(自身を含む): 32289600

約数和(自身を除く): 11608221

約数列:

[1, 3, 9, 27, 29, 61, 87, 183, 261, 433, 549, 783, 1299, 1647, 1769, 3897, 5307, 11691, 12557, 15921, 26413, 37671, 47763, 79239, 113013, 237717, 339039, 713151, 765977, 2297931, 6893793, 20681379]

約数ペア:

[(1, 20681379), (3, 6893793), (9, 2297931), (27, 765977), (29, 713151), (61, 339039), (87, 237717), (183, 113013), (261, 79239), (433, 47763), (549, 37671), (783, 26413), (1299, 15921), (1647, 12557), (1769, 11691), (3897, 5307)]