21561918

素因数分解:

$2^1\times 3^1\times 7^1\times {\mathrm{349}}^1\times {\mathrm{1471}}^1$

素因数の和:1832

約数の個数: 32

約数和(自身を含む): 49459200

約数和(自身を除く): 27897282

約数列:

[1, 2, 3, 6, 7, 14, 21, 42, 349, 698, 1047, 1471, 2094, 2443, 2942, 4413, 4886, 7329, 8826, 10297, 14658, 20594, 30891, 61782, 513379, 1026758, 1540137, 3080274, 3593653, 7187306, 10780959, 21561918]

約数ペア:

[(1, 21561918), (2, 10780959), (3, 7187306), (6, 3593653), (7, 3080274), (14, 1540137), (21, 1026758), (42, 513379), (349, 61782), (698, 30891), (1047, 20594), (1471, 14658), (2094, 10297), (2443, 8826), (2942, 7329), (4413, 4886)]