21871178

素因数分解:

$2^1\times 7^1\times {\mathrm{127}}^1\times {\mathrm{12301}}^1$

素因数の和:12437

約数の個数: 16

約数和(自身を含む): 37791744

約数和(自身を除く): 15920566

約数列:

[1, 2, 7, 14, 127, 254, 889, 1778, 12301, 24602, 86107, 172214, 1562227, 3124454, 10935589, 21871178]

約数ペア:

[(1, 21871178), (2, 10935589), (7, 3124454), (14, 1562227), (127, 172214), (254, 86107), (889, 24602), (1778, 12301)]