17802981

素因数分解:

$3^2\times 7^1\times {\mathrm{19}}^1\times {\mathrm{107}}^1\times {\mathrm{139}}^1$

素因数の和:278

約数の個数: 48

約数和(自身を含む): 31449600

約数和(自身を除く): 13646619

約数列:

[1, 3, 7, 9, 19, 21, 57, 63, 107, 133, 139, 171, 321, 399, 417, 749, 963, 973, 1197, 1251, 2033, 2247, 2641, 2919, 6099, 6741, 7923, 8757, 14231, 14873, 18297, 18487, 23769, 42693, 44619, 55461, 104111, 128079, 133857, 166383, 282587, 312333, 847761, 936999, 1978109, 2543283, 5934327, 17802981]

約数ペア:

[(1, 17802981), (3, 5934327), (7, 2543283), (9, 1978109), (19, 936999), (21, 847761), (57, 312333), (63, 282587), (107, 166383), (133, 133857), (139, 128079), (171, 104111), (321, 55461), (399, 44619), (417, 42693), (749, 23769), (963, 18487), (973, 18297), (1197, 14873), (1251, 14231), (2033, 8757), (2247, 7923), (2641, 6741), (2919, 6099)]