30787239

素因数分解:

$3^1\times 7^2\times {\mathrm{19}}^1\times {\mathrm{73}}^1\times {\mathrm{151}}^1$

素因数の和:260

約数の個数: 48

約数和(自身を含む): 51290880

約数和(自身を除く): 20503641

約数列:

[1, 3, 7, 19, 21, 49, 57, 73, 133, 147, 151, 219, 399, 453, 511, 931, 1057, 1387, 1533, 2793, 2869, 3171, 3577, 4161, 7399, 8607, 9709, 10731, 11023, 20083, 22197, 29127, 33069, 60249, 67963, 77161, 140581, 203889, 209437, 231483, 421743, 540127, 628311, 1466059, 1620381, 4398177, 10262413, 30787239]

約数ペア:

[(1, 30787239), (3, 10262413), (7, 4398177), (19, 1620381), (21, 1466059), (49, 628311), (57, 540127), (73, 421743), (133, 231483), (147, 209437), (151, 203889), (219, 140581), (399, 77161), (453, 67963), (511, 60249), (931, 33069), (1057, 29127), (1387, 22197), (1533, 20083), (2793, 11023), (2869, 10731), (3171, 9709), (3577, 8607), (4161, 7399)]