21678327

素因数分解:

$3^3\times {\mathrm{11}}^1\times {\mathrm{47}}^1\times {\mathrm{1553}}^1$

素因数の和:1620

約数の個数: 32

約数和(自身を含む): 35804160

約数和(自身を除く): 14125833

約数列:

[1, 3, 9, 11, 27, 33, 47, 99, 141, 297, 423, 517, 1269, 1551, 1553, 4653, 4659, 13959, 13977, 17083, 41931, 51249, 72991, 153747, 218973, 461241, 656919, 802901, 1970757, 2408703, 7226109, 21678327]

約数ペア:

[(1, 21678327), (3, 7226109), (9, 2408703), (11, 1970757), (27, 802901), (33, 656919), (47, 461241), (99, 218973), (141, 153747), (297, 72991), (423, 51249), (517, 41931), (1269, 17083), (1551, 13977), (1553, 13959), (4653, 4659)]