21513778

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{75223}}^1$

素因数の和:75249

約数の個数: 16

約数和(自身を含む): 37912896

約数和(自身を除く): 16399118

約数列:

[1, 2, 11, 13, 22, 26, 143, 286, 75223, 150446, 827453, 977899, 1654906, 1955798, 10756889, 21513778]

約数ペア:

[(1, 21513778), (2, 10756889), (11, 1955798), (13, 1654906), (22, 977899), (26, 827453), (143, 150446), (286, 75223)]