645992739

素因数分解:

$3^4\times 7^1\times {\mathrm{127}}^1\times {\mathrm{8971}}^1$

素因数の和:9117

約数の個数: 40

約数和(自身を含む): 1111666688

約数和(自身を除く): 465673949

約数列:

[1, 3, 7, 9, 21, 27, 63, 81, 127, 189, 381, 567, 889, 1143, 2667, 3429, 8001, 8971, 10287, 24003, 26913, 62797, 72009, 80739, 188391, 242217, 565173, 726651, 1139317, 1695519, 3417951, 5086557, 7975219, 10253853, 23925657, 30761559, 71776971, 92284677, 215330913, 645992739]

約数ペア:

[(1, 645992739), (3, 215330913), (7, 92284677), (9, 71776971), (21, 30761559), (27, 23925657), (63, 10253853), (81, 7975219), (127, 5086557), (189, 3417951), (381, 1695519), (567, 1139317), (889, 726651), (1143, 565173), (2667, 242217), (3429, 188391), (8001, 80739), (8971, 72009), (10287, 62797), (24003, 26913)]