21347499

素因数分解:

$3^1\times {\mathrm{31}}^1\times {\mathrm{53}}^1\times {\mathrm{61}}^1\times {\mathrm{71}}^1$

素因数の和:219

約数の個数: 32

約数和(自身を含む): 30855168

約数和(自身を除く): 9507669

約数列:

[1, 3, 31, 53, 61, 71, 93, 159, 183, 213, 1643, 1891, 2201, 3233, 3763, 4331, 4929, 5673, 6603, 9699, 11289, 12993, 100223, 116653, 134261, 229543, 300669, 349959, 402783, 688629, 7115833, 21347499]

約数ペア:

[(1, 21347499), (3, 7115833), (31, 688629), (53, 402783), (61, 349959), (71, 300669), (93, 229543), (159, 134261), (183, 116653), (213, 100223), (1643, 12993), (1891, 11289), (2201, 9699), (3233, 6603), (3763, 5673), (4331, 4929)]