71972817

素因数分解:

$3^1\times 7^2\times {\mathrm{19}}^1\times {\mathrm{73}}^1\times {\mathrm{353}}^1$

素因数の和:462

約数の個数: 48

約数和(自身を含む): 119453760

約数和(自身を除く): 47480943

約数列:

[1, 3, 7, 19, 21, 49, 57, 73, 133, 147, 219, 353, 399, 511, 931, 1059, 1387, 1533, 2471, 2793, 3577, 4161, 6707, 7413, 9709, 10731, 17297, 20121, 25769, 29127, 46949, 51891, 67963, 77307, 140847, 180383, 203889, 328643, 489611, 541149, 985929, 1262681, 1468833, 3427277, 3788043, 10281831, 23990939, 71972817]

約数ペア:

[(1, 71972817), (3, 23990939), (7, 10281831), (19, 3788043), (21, 3427277), (49, 1468833), (57, 1262681), (73, 985929), (133, 541149), (147, 489611), (219, 328643), (353, 203889), (399, 180383), (511, 140847), (931, 77307), (1059, 67963), (1387, 51891), (1533, 46949), (2471, 29127), (2793, 25769), (3577, 20121), (4161, 17297), (6707, 10731), (7413, 9709)]