21128264

素因数分解:

$2^3\times {\mathrm{563}}^1\times {\mathrm{4691}}^1$

素因数の和:5260

約数の個数: 16

約数和(自身を含む): 39694320

約数和(自身を除く): 18566056

約数列:

[1, 2, 4, 8, 563, 1126, 2252, 4504, 4691, 9382, 18764, 37528, 2641033, 5282066, 10564132, 21128264]

約数ペア:

[(1, 21128264), (2, 10564132), (4, 5282066), (8, 2641033), (563, 37528), (1126, 18764), (2252, 9382), (4504, 4691)]