17991116

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{71}}^1\times {\mathrm{443}}^1$

素因数の和:542

約数の個数: 48

約数和(自身を含む): 37594368

約数和(自身を除く): 19603252

約数列:

[1, 2, 4, 11, 13, 22, 26, 44, 52, 71, 142, 143, 284, 286, 443, 572, 781, 886, 923, 1562, 1772, 1846, 3124, 3692, 4873, 5759, 9746, 10153, 11518, 19492, 20306, 23036, 31453, 40612, 62906, 63349, 125812, 126698, 253396, 345983, 408889, 691966, 817778, 1383932, 1635556, 4497779, 8995558, 17991116]

約数ペア:

[(1, 17991116), (2, 8995558), (4, 4497779), (11, 1635556), (13, 1383932), (22, 817778), (26, 691966), (44, 408889), (52, 345983), (71, 253396), (142, 126698), (143, 125812), (284, 63349), (286, 62906), (443, 40612), (572, 31453), (781, 23036), (886, 20306), (923, 19492), (1562, 11518), (1772, 10153), (1846, 9746), (3124, 5759), (3692, 4873)]