21187204

素因数分解:

$2^2\times {\mathrm{19}}^1\times {\mathrm{149}}^1\times {\mathrm{1871}}^1$

素因数の和:2043

約数の個数: 24

約数和(自身を含む): 39312000

約数和(自身を除く): 18124796

約数列:

[1, 2, 4, 19, 38, 76, 149, 298, 596, 1871, 2831, 3742, 5662, 7484, 11324, 35549, 71098, 142196, 278779, 557558, 1115116, 5296801, 10593602, 21187204]

約数ペア:

[(1, 21187204), (2, 10593602), (4, 5296801), (19, 1115116), (38, 557558), (76, 278779), (149, 142196), (298, 71098), (596, 35549), (1871, 11324), (2831, 7484), (3742, 5662)]