61720240

素因数分解:

$2^4\times 5^1\times {\mathrm{771503}}^1$

素因数の和:771516

約数の個数: 20

約数和(自身を含む): 143499744

約数和(自身を除く): 81779504

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 771503, 1543006, 3086012, 3857515, 6172024, 7715030, 12344048, 15430060, 30860120, 61720240]

約数ペア:

[(1, 61720240), (2, 30860120), (4, 15430060), (5, 12344048), (8, 7715030), (10, 6172024), (16, 3857515), (20, 3086012), (40, 1543006), (80, 771503)]