221337381

素因数分解:

$3^1\times {\mathrm{53}}^1\times {\mathrm{67}}^1\times {\mathrm{79}}^1\times {\mathrm{263}}^1$

素因数の和:465

約数の個数: 32

約数和(自身を含む): 310210560

約数和(自身を除く): 88873179

約数列:

[1, 3, 53, 67, 79, 159, 201, 237, 263, 789, 3551, 4187, 5293, 10653, 12561, 13939, 15879, 17621, 20777, 41817, 52863, 62331, 280529, 841587, 933913, 1101181, 1392059, 2801739, 3303543, 4176177, 73779127, 221337381]

約数ペア:

[(1, 221337381), (3, 73779127), (53, 4176177), (67, 3303543), (79, 2801739), (159, 1392059), (201, 1101181), (237, 933913), (263, 841587), (789, 280529), (3551, 62331), (4187, 52863), (5293, 41817), (10653, 20777), (12561, 17621), (13939, 15879)]