18767217

素因数分解:

$3^1\times 7^1\times {\mathrm{41}}^1\times {\mathrm{71}}^1\times {\mathrm{307}}^1$

素因数の和:429

約数の個数: 32

約数和(自身を含む): 29804544

約数和(自身を除く): 11037327

約数列:

[1, 3, 7, 21, 41, 71, 123, 213, 287, 307, 497, 861, 921, 1491, 2149, 2911, 6447, 8733, 12587, 20377, 21797, 37761, 61131, 65391, 88109, 152579, 264327, 457737, 893677, 2681031, 6255739, 18767217]

約数ペア:

[(1, 18767217), (3, 6255739), (7, 2681031), (21, 893677), (41, 457737), (71, 264327), (123, 152579), (213, 88109), (287, 65391), (307, 61131), (497, 37761), (861, 21797), (921, 20377), (1491, 12587), (2149, 8733), (2911, 6447)]