21054951

素因数分解:

$3^3\times {\mathrm{67}}^1\times {\mathrm{103}}^1\times {\mathrm{113}}^1$

素因数の和:292

約数の個数: 32

約数和(自身を含む): 32248320

約数和(自身を除く): 11193369

約数列:

[1, 3, 9, 27, 67, 103, 113, 201, 309, 339, 603, 927, 1017, 1809, 2781, 3051, 6901, 7571, 11639, 20703, 22713, 34917, 62109, 68139, 104751, 186327, 204417, 314253, 779813, 2339439, 7018317, 21054951]

約数ペア:

[(1, 21054951), (3, 7018317), (9, 2339439), (27, 779813), (67, 314253), (103, 204417), (113, 186327), (201, 104751), (309, 68139), (339, 62109), (603, 34917), (927, 22713), (1017, 20703), (1809, 11639), (2781, 7571), (3051, 6901)]