1997240

素因数分解:

$2^3\times 5^1\times 7^2\times {\mathrm{1019}}^1$

素因数の和:1044

約数の個数: 48

約数和(自身を含む): 5232600

約数和(自身を除く): 3235360

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 49, 56, 70, 98, 140, 196, 245, 280, 392, 490, 980, 1019, 1960, 2038, 4076, 5095, 7133, 8152, 10190, 14266, 20380, 28532, 35665, 40760, 49931, 57064, 71330, 99862, 142660, 199724, 249655, 285320, 399448, 499310, 998620, 1997240]

約数ペア:

[(1, 1997240), (2, 998620), (4, 499310), (5, 399448), (7, 285320), (8, 249655), (10, 199724), (14, 142660), (20, 99862), (28, 71330), (35, 57064), (40, 49931), (49, 40760), (56, 35665), (70, 28532), (98, 20380), (140, 14266), (196, 10190), (245, 8152), (280, 7133), (392, 5095), (490, 4076), (980, 2038), (1019, 1960)]