221528643

素因数分解:

$3^1\times 7^1\times {\mathrm{1987}}^1\times {\mathrm{5309}}^1$

素因数の和:7306

約数の個数: 16

約数和(自身を含む): 337800960

約数和(自身を除く): 116272317

約数列:

[1, 3, 7, 21, 1987, 5309, 5961, 13909, 15927, 37163, 41727, 111489, 10548983, 31646949, 73842881, 221528643]

約数ペア:

[(1, 221528643), (3, 73842881), (7, 31646949), (21, 10548983), (1987, 111489), (5309, 41727), (5961, 37163), (13909, 15927)]