20511946

素因数分解:

$2^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{2621}}^1$

素因数の和:2686

約数の個数: 32

約数和(自身を含む): 38763648

約数和(自身を除く): 18251702

約数列:

[1, 2, 7, 13, 14, 26, 43, 86, 91, 182, 301, 559, 602, 1118, 2621, 3913, 5242, 7826, 18347, 34073, 36694, 68146, 112703, 225406, 238511, 477022, 788921, 1465139, 1577842, 2930278, 10255973, 20511946]

約数ペア:

[(1, 20511946), (2, 10255973), (7, 2930278), (13, 1577842), (14, 1465139), (26, 788921), (43, 477022), (86, 238511), (91, 225406), (182, 112703), (301, 68146), (559, 36694), (602, 34073), (1118, 18347), (2621, 7826), (3913, 5242)]