19710218

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{38953}}^1$

素因数の和:38989

約数の個数: 16

約数和(自身を含む): 33656256

約数和(自身を除く): 13946038

約数列:

[1, 2, 11, 22, 23, 46, 253, 506, 38953, 77906, 428483, 856966, 895919, 1791838, 9855109, 19710218]

約数ペア:

[(1, 19710218), (2, 9855109), (11, 1791838), (22, 895919), (23, 856966), (46, 428483), (253, 77906), (506, 38953)]