21437811

素因数分解:

$3^3\times {\mathrm{53}}^1\times {\mathrm{71}}^1\times {\mathrm{211}}^1$

素因数の和:344

約数の個数: 32

約数和(自身を含む): 32970240

約数和(自身を除く): 11532429

約数列:

[1, 3, 9, 27, 53, 71, 159, 211, 213, 477, 633, 639, 1431, 1899, 1917, 3763, 5697, 11183, 11289, 14981, 33549, 33867, 44943, 100647, 101601, 134829, 301941, 404487, 793993, 2381979, 7145937, 21437811]

約数ペア:

[(1, 21437811), (3, 7145937), (9, 2381979), (27, 793993), (53, 404487), (71, 301941), (159, 134829), (211, 101601), (213, 100647), (477, 44943), (633, 33867), (639, 33549), (1431, 14981), (1899, 11289), (1917, 11183), (3763, 5697)]