20648145

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{29}}^1\times {\mathrm{6781}}^1$

素因数の和:6825

約数の個数: 32

約数和(自身を含む): 39064320

約数和(自身を除く): 18416175

約数列:

[1, 3, 5, 7, 15, 21, 29, 35, 87, 105, 145, 203, 435, 609, 1015, 3045, 6781, 20343, 33905, 47467, 101715, 142401, 196649, 237335, 589947, 712005, 983245, 1376543, 2949735, 4129629, 6882715, 20648145]

約数ペア:

[(1, 20648145), (3, 6882715), (5, 4129629), (7, 2949735), (15, 1376543), (21, 983245), (29, 712005), (35, 589947), (87, 237335), (105, 196649), (145, 142401), (203, 101715), (435, 47467), (609, 33905), (1015, 20343), (3045, 6781)]