19966905

素因数分解:

$3^4\times 5^1\times 7^1\times {\mathrm{7043}}^1$

素因数の和:7067

約数の個数: 40

約数和(自身を含む): 40911552

約数和(自身を除く): 20944647

約数列:

[1, 3, 5, 7, 9, 15, 21, 27, 35, 45, 63, 81, 105, 135, 189, 315, 405, 567, 945, 2835, 7043, 21129, 35215, 49301, 63387, 105645, 147903, 190161, 246505, 316935, 443709, 570483, 739515, 950805, 1331127, 2218545, 2852415, 3993381, 6655635, 19966905]

約数ペア:

[(1, 19966905), (3, 6655635), (5, 3993381), (7, 2852415), (9, 2218545), (15, 1331127), (21, 950805), (27, 739515), (35, 570483), (45, 443709), (63, 316935), (81, 246505), (105, 190161), (135, 147903), (189, 105645), (315, 63387), (405, 49301), (567, 35215), (945, 21129), (2835, 7043)]