21894705

素因数分解:

$3^4\times 5^1\times 7^1\times {\mathrm{7723}}^1$

素因数の和:7747

約数の個数: 40

約数和(自身を含む): 44860992

約数和(自身を除く): 22966287

約数列:

[1, 3, 5, 7, 9, 15, 21, 27, 35, 45, 63, 81, 105, 135, 189, 315, 405, 567, 945, 2835, 7723, 23169, 38615, 54061, 69507, 115845, 162183, 208521, 270305, 347535, 486549, 625563, 810915, 1042605, 1459647, 2432745, 3127815, 4378941, 7298235, 21894705]

約数ペア:

[(1, 21894705), (3, 7298235), (5, 4378941), (7, 3127815), (9, 2432745), (15, 1459647), (21, 1042605), (27, 810915), (35, 625563), (45, 486549), (63, 347535), (81, 270305), (105, 208521), (135, 162183), (189, 115845), (315, 69507), (405, 54061), (567, 38615), (945, 23169), (2835, 7723)]