21492040

素因数分解:

$2^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{28279}}^1$

素因数の和:28309

約数の個数: 32

約数和(自身を含む): 50904000

約数和(自身を除く): 29411960

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 38, 40, 76, 95, 152, 190, 380, 760, 28279, 56558, 113116, 141395, 226232, 282790, 537301, 565580, 1074602, 1131160, 2149204, 2686505, 4298408, 5373010, 10746020, 21492040]

約数ペア:

[(1, 21492040), (2, 10746020), (4, 5373010), (5, 4298408), (8, 2686505), (10, 2149204), (19, 1131160), (20, 1074602), (38, 565580), (40, 537301), (76, 282790), (95, 226232), (152, 141395), (190, 113116), (380, 56558), (760, 28279)]