21017097

素因数分解:

$3^3\times {\mathrm{19}}^1\times {\mathrm{53}}^1\times {\mathrm{773}}^1$

素因数の和:854

約数の個数: 32

約数和(自身を含む): 33436800

約数和(自身を除く): 12419703

約数列:

[1, 3, 9, 19, 27, 53, 57, 159, 171, 477, 513, 773, 1007, 1431, 2319, 3021, 6957, 9063, 14687, 20871, 27189, 40969, 44061, 122907, 132183, 368721, 396549, 778411, 1106163, 2335233, 7005699, 21017097]

約数ペア:

[(1, 21017097), (3, 7005699), (9, 2335233), (19, 1106163), (27, 778411), (53, 396549), (57, 368721), (159, 132183), (171, 122907), (477, 44061), (513, 40969), (773, 27189), (1007, 20871), (1431, 14687), (2319, 9063), (3021, 6957)]