19936161

素因数分解:

$3^2\times 7^1\times {\mathrm{71}}^1\times {\mathrm{4457}}^1$

素因数の和:4541

約数の個数: 24

約数和(自身を含む): 33381504

約数和(自身を除く): 13445343

約数列:

[1, 3, 7, 9, 21, 63, 71, 213, 497, 639, 1491, 4457, 4473, 13371, 31199, 40113, 93597, 280791, 316447, 949341, 2215129, 2848023, 6645387, 19936161]

約数ペア:

[(1, 19936161), (3, 6645387), (7, 2848023), (9, 2215129), (21, 949341), (63, 316447), (71, 280791), (213, 93597), (497, 40113), (639, 31199), (1491, 13371), (4457, 4473)]