19894581

素因数分解:

$3^2\times 7^1\times {\mathrm{457}}^1\times {\mathrm{691}}^1$

素因数の和:1161

約数の個数: 24

約数和(自身を含む): 32961344

約数和(自身を除く): 13066763

約数列:

[1, 3, 7, 9, 21, 63, 457, 691, 1371, 2073, 3199, 4113, 4837, 6219, 9597, 14511, 28791, 43533, 315787, 947361, 2210509, 2842083, 6631527, 19894581]

約数ペア:

[(1, 19894581), (3, 6631527), (7, 2842083), (9, 2210509), (21, 947361), (63, 315787), (457, 43533), (691, 28791), (1371, 14511), (2073, 9597), (3199, 6219), (4113, 4837)]