3998531761

素因数分解:

$7^4\times {\mathrm{23}}^1\times {\mathrm{61}}^1\times {\mathrm{1187}}^1$

素因数の和:1299

約数の個数: 40

約数和(自身を含む): 4951450944

約数和(自身を除く): 952919183

約数列:

[1, 7, 23, 49, 61, 161, 343, 427, 1127, 1187, 1403, 2401, 2989, 7889, 8309, 9821, 20923, 27301, 55223, 58163, 68747, 72407, 146461, 191107, 407141, 481229, 506849, 1337749, 1665361, 2849987, 3368603, 3547943, 9364243, 11657527, 24835601, 65549701, 81602689, 173849207, 571218823, 3998531761]

約数ペア:

[(1, 3998531761), (7, 571218823), (23, 173849207), (49, 81602689), (61, 65549701), (161, 24835601), (343, 11657527), (427, 9364243), (1127, 3547943), (1187, 3368603), (1403, 2849987), (2401, 1665361), (2989, 1337749), (7889, 506849), (8309, 481229), (9821, 407141), (20923, 191107), (27301, 146461), (55223, 72407), (58163, 68747)]