20137808

素因数分解:

$2^4\times {\mathrm{47}}^1\times {\mathrm{61}}^1\times {\mathrm{439}}^1$

素因数の和:555

約数の個数: 40

約数和(自身を含む): 40592640

約数和(自身を除く): 20454832

約数列:

[1, 2, 4, 8, 16, 47, 61, 94, 122, 188, 244, 376, 439, 488, 752, 878, 976, 1756, 2867, 3512, 5734, 7024, 11468, 20633, 22936, 26779, 41266, 45872, 53558, 82532, 107116, 165064, 214232, 330128, 428464, 1258613, 2517226, 5034452, 10068904, 20137808]

約数ペア:

[(1, 20137808), (2, 10068904), (4, 5034452), (8, 2517226), (16, 1258613), (47, 428464), (61, 330128), (94, 214232), (122, 165064), (188, 107116), (244, 82532), (376, 53558), (439, 45872), (488, 41266), (752, 26779), (878, 22936), (976, 20633), (1756, 11468), (2867, 7024), (3512, 5734)]