18655480

素因数分解:

$2^3\times 5^1\times {\mathrm{67}}^1\times {\mathrm{6961}}^1$

素因数の和:7039

約数の個数: 32

約数和(自身を含む): 42607440

約数和(自身を除く): 23951960

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 67, 134, 268, 335, 536, 670, 1340, 2680, 6961, 13922, 27844, 34805, 55688, 69610, 139220, 278440, 466387, 932774, 1865548, 2331935, 3731096, 4663870, 9327740, 18655480]

約数ペア:

[(1, 18655480), (2, 9327740), (4, 4663870), (5, 3731096), (8, 2331935), (10, 1865548), (20, 932774), (40, 466387), (67, 278440), (134, 139220), (268, 69610), (335, 55688), (536, 34805), (670, 27844), (1340, 13922), (2680, 6961)]