17947340

素因数分解:

$2^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{43}}^1\times {\mathrm{509}}^1$

素因数の和:602

約数の個数: 48

約数和(自身を含む): 39584160

約数和(自身を除く): 21636820

約数列:

[1, 2, 4, 5, 10, 20, 41, 43, 82, 86, 164, 172, 205, 215, 410, 430, 509, 820, 860, 1018, 1763, 2036, 2545, 3526, 5090, 7052, 8815, 10180, 17630, 20869, 21887, 35260, 41738, 43774, 83476, 87548, 104345, 109435, 208690, 218870, 417380, 437740, 897367, 1794734, 3589468, 4486835, 8973670, 17947340]

約数ペア:

[(1, 17947340), (2, 8973670), (4, 4486835), (5, 3589468), (10, 1794734), (20, 897367), (41, 437740), (43, 417380), (82, 218870), (86, 208690), (164, 109435), (172, 104345), (205, 87548), (215, 83476), (410, 43774), (430, 41738), (509, 35260), (820, 21887), (860, 20869), (1018, 17630), (1763, 10180), (2036, 8815), (2545, 7052), (3526, 5090)]