21807819

素因数分解:

$3^3\times {\mathrm{11}}^1\times {\mathrm{101}}^1\times {\mathrm{727}}^1$

素因数の和:848

約数の個数: 32

約数和(自身を含む): 35642880

約数和(自身を除く): 13835061

約数列:

[1, 3, 9, 11, 27, 33, 99, 101, 297, 303, 727, 909, 1111, 2181, 2727, 3333, 6543, 7997, 9999, 19629, 23991, 29997, 71973, 73427, 215919, 220281, 660843, 807697, 1982529, 2423091, 7269273, 21807819]

約数ペア:

[(1, 21807819), (3, 7269273), (9, 2423091), (11, 1982529), (27, 807697), (33, 660843), (99, 220281), (101, 215919), (297, 73427), (303, 71973), (727, 29997), (909, 23991), (1111, 19629), (2181, 9999), (2727, 7997), (3333, 6543)]