19871852

素因数分解:

$2^2\times 7^2\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{709}}^1$

素因数の和:751

約数の個数: 72

約数和(自身を含む): 47592720

約数和(自身を除く): 27720868

約数列:

[1, 2, 4, 7, 11, 13, 14, 22, 26, 28, 44, 49, 52, 77, 91, 98, 143, 154, 182, 196, 286, 308, 364, 539, 572, 637, 709, 1001, 1078, 1274, 1418, 2002, 2156, 2548, 2836, 4004, 4963, 7007, 7799, 9217, 9926, 14014, 15598, 18434, 19852, 28028, 31196, 34741, 36868, 54593, 64519, 69482, 101387, 109186, 129038, 138964, 202774, 218372, 258076, 382151, 405548, 451633, 709709, 764302, 903266, 1419418, 1528604, 1806532, 2838836, 4967963, 9935926, 19871852]

約数ペア:

[(1, 19871852), (2, 9935926), (4, 4967963), (7, 2838836), (11, 1806532), (13, 1528604), (14, 1419418), (22, 903266), (26, 764302), (28, 709709), (44, 451633), (49, 405548), (52, 382151), (77, 258076), (91, 218372), (98, 202774), (143, 138964), (154, 129038), (182, 109186), (196, 101387), (286, 69482), (308, 64519), (364, 54593), (539, 36868), (572, 34741), (637, 31196), (709, 28028), (1001, 19852), (1078, 18434), (1274, 15598), (1418, 14014), (2002, 9926), (2156, 9217), (2548, 7799), (2836, 7007), (4004, 4963)]