218471331

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{71}}^1\times {\mathrm{257}}^1\times {\mathrm{307}}^1$

素因数の和:651

約数の個数: 32

約数和(自身を含む): 320398848

約数和(自身を除く): 101927517

約数列:

[1, 3, 13, 39, 71, 213, 257, 307, 771, 921, 923, 2769, 3341, 3991, 10023, 11973, 18247, 21797, 54741, 65391, 78899, 236697, 237211, 283361, 711633, 850083, 1025687, 3077061, 5601829, 16805487, 72823777, 218471331]

約数ペア:

[(1, 218471331), (3, 72823777), (13, 16805487), (39, 5601829), (71, 3077061), (213, 1025687), (257, 850083), (307, 711633), (771, 283361), (921, 237211), (923, 236697), (2769, 78899), (3341, 65391), (3991, 54741), (10023, 21797), (11973, 18247)]