20139145

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{709}}^1$

素因数の和:769

約数の個数: 32

約数和(自身を含む): 28627200

約数和(自身を除く): 8488055

約数列:

[1, 5, 13, 19, 23, 65, 95, 115, 247, 299, 437, 709, 1235, 1495, 2185, 3545, 5681, 9217, 13471, 16307, 28405, 46085, 67355, 81535, 175123, 211991, 309833, 875615, 1059955, 1549165, 4027829, 20139145]

約数ペア:

[(1, 20139145), (5, 4027829), (13, 1549165), (19, 1059955), (23, 875615), (65, 309833), (95, 211991), (115, 175123), (247, 81535), (299, 67355), (437, 46085), (709, 28405), (1235, 16307), (1495, 13471), (2185, 9217), (3545, 5681)]