21045258

素因数分解:

$2^1\times 3^5\times {\mathrm{13}}^1\times {\mathrm{3331}}^1$

素因数の和:3361

約数の個数: 48

約数和(自身を含む): 50939616

約数和(自身を除く): 29894358

約数列:

[1, 2, 3, 6, 9, 13, 18, 26, 27, 39, 54, 78, 81, 117, 162, 234, 243, 351, 486, 702, 1053, 2106, 3159, 3331, 6318, 6662, 9993, 19986, 29979, 43303, 59958, 86606, 89937, 129909, 179874, 259818, 269811, 389727, 539622, 779454, 809433, 1169181, 1618866, 2338362, 3507543, 7015086, 10522629, 21045258]

約数ペア:

[(1, 21045258), (2, 10522629), (3, 7015086), (6, 3507543), (9, 2338362), (13, 1618866), (18, 1169181), (26, 809433), (27, 779454), (39, 539622), (54, 389727), (78, 269811), (81, 259818), (117, 179874), (162, 129909), (234, 89937), (243, 86606), (351, 59958), (486, 43303), (702, 29979), (1053, 19986), (2106, 9993), (3159, 6662), (3331, 6318)]