19981768

素因数分解:

$2^3\times {\mathrm{19}}^1\times {\mathrm{47}}^1\times {\mathrm{2797}}^1$

素因数の和:2869

約数の個数: 32

約数和(自身を含む): 40291200

約数和(自身を除く): 20309432

約数列:

[1, 2, 4, 8, 19, 38, 47, 76, 94, 152, 188, 376, 893, 1786, 2797, 3572, 5594, 7144, 11188, 22376, 53143, 106286, 131459, 212572, 262918, 425144, 525836, 1051672, 2497721, 4995442, 9990884, 19981768]

約数ペア:

[(1, 19981768), (2, 9990884), (4, 4995442), (8, 2497721), (19, 1051672), (38, 525836), (47, 425144), (76, 262918), (94, 212572), (152, 131459), (188, 106286), (376, 53143), (893, 22376), (1786, 11188), (2797, 7144), (3572, 5594)]