21225897

素因数分解:

$3^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{109}}^1\times {\mathrm{281}}^1$

素因数の和:414

約数の個数: 48

約数和(自身を含む): 38712960

約数和(自身を除く): 17487063

約数列:

[1, 3, 7, 9, 11, 21, 33, 63, 77, 99, 109, 231, 281, 327, 693, 763, 843, 981, 1199, 1967, 2289, 2529, 3091, 3597, 5901, 6867, 8393, 9273, 10791, 17703, 21637, 25179, 27819, 30629, 64911, 75537, 91887, 194733, 214403, 275661, 336919, 643209, 1010757, 1929627, 2358433, 3032271, 7075299, 21225897]

約数ペア:

[(1, 21225897), (3, 7075299), (7, 3032271), (9, 2358433), (11, 1929627), (21, 1010757), (33, 643209), (63, 336919), (77, 275661), (99, 214403), (109, 194733), (231, 91887), (281, 75537), (327, 64911), (693, 30629), (763, 27819), (843, 25179), (981, 21637), (1199, 17703), (1967, 10791), (2289, 9273), (2529, 8393), (3091, 6867), (3597, 5901)]