21380546

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{43}}^1\times {\mathrm{97}}^1\times {\mathrm{233}}^1$

素因数の和:386

約数の個数: 32

約数和(自身を含む): 36324288

約数和(自身を除く): 14943742

約数列:

[1, 2, 11, 22, 43, 86, 97, 194, 233, 466, 473, 946, 1067, 2134, 2563, 4171, 5126, 8342, 10019, 20038, 22601, 45202, 45881, 91762, 110209, 220418, 248611, 497222, 971843, 1943686, 10690273, 21380546]

約数ペア:

[(1, 21380546), (2, 10690273), (11, 1943686), (22, 971843), (43, 497222), (86, 248611), (97, 220418), (194, 110209), (233, 91762), (466, 45881), (473, 45202), (946, 22601), (1067, 20038), (2134, 10019), (2563, 8342), (4171, 5126)]