21130137

素因数分解:

$3^2\times 7^1\times {\mathrm{149}}^1\times {\mathrm{2251}}^1$

素因数の和:2413

約数の個数: 24

約数和(自身を含む): 35131200

約数和(自身を除く): 14001063

約数列:

[1, 3, 7, 9, 21, 63, 149, 447, 1043, 1341, 2251, 3129, 6753, 9387, 15757, 20259, 47271, 141813, 335399, 1006197, 2347793, 3018591, 7043379, 21130137]

約数ペア:

[(1, 21130137), (3, 7043379), (7, 3018591), (9, 2347793), (21, 1006197), (63, 335399), (149, 141813), (447, 47271), (1043, 20259), (1341, 15757), (2251, 9387), (3129, 6753)]