20751965

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{101}}^1\times {\mathrm{109}}^1$

素因数の和:257

約数の個数: 32

約数和(自身を含む): 28274400

約数和(自身を除く): 7522435

約数列:

[1, 5, 13, 29, 65, 101, 109, 145, 377, 505, 545, 1313, 1417, 1885, 2929, 3161, 6565, 7085, 11009, 14645, 15805, 38077, 41093, 55045, 143117, 190385, 205465, 319261, 715585, 1596305, 4150393, 20751965]

約数ペア:

[(1, 20751965), (5, 4150393), (13, 1596305), (29, 715585), (65, 319261), (101, 205465), (109, 190385), (145, 143117), (377, 55045), (505, 41093), (545, 38077), (1313, 15805), (1417, 14645), (1885, 11009), (2929, 7085), (3161, 6565)]