18916742

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{149}}^1\times {\mathrm{257}}^1$

素因数の和:440

約数の個数: 32

約数和(自身を含む): 32508000

約数和(自身を除く): 13591258

約数列:

[1, 2, 13, 19, 26, 38, 149, 247, 257, 298, 494, 514, 1937, 2831, 3341, 3874, 4883, 5662, 6682, 9766, 36803, 38293, 63479, 73606, 76586, 126958, 497809, 727567, 995618, 1455134, 9458371, 18916742]

約数ペア:

[(1, 18916742), (2, 9458371), (13, 1455134), (19, 995618), (26, 727567), (38, 497809), (149, 126958), (247, 76586), (257, 73606), (298, 63479), (494, 38293), (514, 36803), (1937, 9766), (2831, 6682), (3341, 5662), (3874, 4883)]