21709038

素因数分解:

$2^1\times 3^1\times {\mathrm{13}}^1\times {\mathrm{278321}}^1$

素因数の和:278339

約数の個数: 16

約数和(自身を含む): 46758096

約数和(自身を除く): 25049058

約数列:

[1, 2, 3, 6, 13, 26, 39, 78, 278321, 556642, 834963, 1669926, 3618173, 7236346, 10854519, 21709038]

約数ペア:

[(1, 21709038), (2, 10854519), (3, 7236346), (6, 3618173), (13, 1669926), (26, 834963), (39, 556642), (78, 278321)]