21707785

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{20773}}^1$

素因数の和:20808

約数の個数: 16

約数和(自身を含む): 29914560

約数和(自身を除く): 8206775

約数列:

[1, 5, 11, 19, 55, 95, 209, 1045, 20773, 103865, 228503, 394687, 1142515, 1973435, 4341557, 21707785]

約数ペア:

[(1, 21707785), (5, 4341557), (11, 1973435), (19, 1142515), (55, 394687), (95, 228503), (209, 103865), (1045, 20773)]