216816560

素因数分解:

$2^4\times 5^1\times {\mathrm{2710207}}^1$

素因数の和:2710220

約数の個数: 20

約数和(自身を含む): 504098688

約数和(自身を除く): 287282128

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 2710207, 5420414, 10840828, 13551035, 21681656, 27102070, 43363312, 54204140, 108408280, 216816560]

約数ペア:

[(1, 216816560), (2, 108408280), (4, 54204140), (5, 43363312), (8, 27102070), (10, 21681656), (16, 13551035), (20, 10840828), (40, 5420414), (80, 2710207)]