20621169

素因数分解:

$3^3\times {\mathrm{31}}^1\times {\mathrm{71}}^1\times {\mathrm{347}}^1$

素因数の和:458

約数の個数: 32

約数和(自身を含む): 32071680

約数和(自身を除く): 11450511

約数列:

[1, 3, 9, 27, 31, 71, 93, 213, 279, 347, 639, 837, 1041, 1917, 2201, 3123, 6603, 9369, 10757, 19809, 24637, 32271, 59427, 73911, 96813, 221733, 290439, 665199, 763747, 2291241, 6873723, 20621169]

約数ペア:

[(1, 20621169), (3, 6873723), (9, 2291241), (27, 763747), (31, 665199), (71, 290439), (93, 221733), (213, 96813), (279, 73911), (347, 59427), (639, 32271), (837, 24637), (1041, 19809), (1917, 10757), (2201, 9369), (3123, 6603)]