199720240

素因数分解:

$2^4\times 5^1\times {\mathrm{2496503}}^1$

素因数の和:2496516

約数の個数: 20

約数和(自身を含む): 464349744

約数和(自身を除く): 264629504

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 2496503, 4993006, 9986012, 12482515, 19972024, 24965030, 39944048, 49930060, 99860120, 199720240]

約数ペア:

[(1, 199720240), (2, 99860120), (4, 49930060), (5, 39944048), (8, 24965030), (10, 19972024), (16, 12482515), (20, 9986012), (40, 4993006), (80, 2496503)]