216931561

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{347}}^1\times {\mathrm{353}}^1$

素因数の和:741

約数の個数: 32

約数和(自身を含む): 283834368

約数和(自身を除く): 66902807

約数列:

[1, 7, 11, 23, 77, 161, 253, 347, 353, 1771, 2429, 2471, 3817, 3883, 7981, 8119, 26719, 27181, 55867, 56833, 87791, 89309, 122491, 614537, 625163, 857437, 1347401, 2817293, 9431807, 19721051, 30990223, 216931561]

約数ペア:

[(1, 216931561), (7, 30990223), (11, 19721051), (23, 9431807), (77, 2817293), (161, 1347401), (253, 857437), (347, 625163), (353, 614537), (1771, 122491), (2429, 89309), (2471, 87791), (3817, 56833), (3883, 55867), (7981, 27181), (8119, 26719)]