21307055

素因数分解:

$5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{55343}}^1$

素因数の和:55366

約数の個数: 16

約数和(自身を含む): 31878144

約数和(自身を除く): 10571089

約数列:

[1, 5, 7, 11, 35, 55, 77, 385, 55343, 276715, 387401, 608773, 1937005, 3043865, 4261411, 21307055]

約数ペア:

[(1, 21307055), (5, 4261411), (7, 3043865), (11, 1937005), (35, 608773), (55, 387401), (77, 276715), (385, 55343)]