21530418

素因数分解:

$2^1\times 3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{47}}^1\times {\mathrm{839}}^1$

素因数の和:911

約数の個数: 64

約数和(自身を含む): 54190080

約数和(自身を除く): 32659662

約数列:

[1, 2, 3, 6, 7, 13, 14, 21, 26, 39, 42, 47, 78, 91, 94, 141, 182, 273, 282, 329, 546, 611, 658, 839, 987, 1222, 1678, 1833, 1974, 2517, 3666, 4277, 5034, 5873, 8554, 10907, 11746, 12831, 17619, 21814, 25662, 32721, 35238, 39433, 65442, 76349, 78866, 118299, 152698, 229047, 236598, 276031, 458094, 512629, 552062, 828093, 1025258, 1537887, 1656186, 3075774, 3588403, 7176806, 10765209, 21530418]

約数ペア:

[(1, 21530418), (2, 10765209), (3, 7176806), (6, 3588403), (7, 3075774), (13, 1656186), (14, 1537887), (21, 1025258), (26, 828093), (39, 552062), (42, 512629), (47, 458094), (78, 276031), (91, 236598), (94, 229047), (141, 152698), (182, 118299), (273, 78866), (282, 76349), (329, 65442), (546, 39433), (611, 35238), (658, 32721), (839, 25662), (987, 21814), (1222, 17619), (1678, 12831), (1833, 11746), (1974, 10907), (2517, 8554), (3666, 5873), (4277, 5034)]