19291258987

素因数分解:

$7^2\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{88811}}^1$

素因数の和:88880

約数の個数: 48

約数和(自身を含む): 27214838784

約数和(自身を除く): 7923579797

約数列:

[1, 7, 11, 13, 31, 49, 77, 91, 143, 217, 341, 403, 539, 637, 1001, 1519, 2387, 2821, 4433, 7007, 16709, 19747, 31031, 88811, 217217, 621677, 976921, 1154543, 2753141, 4351739, 6838447, 8081801, 12699973, 19271987, 30284551, 35790833, 47869129, 56572607, 88899811, 134903909, 211991857, 250535831, 393699163, 622298677, 1483942999, 1753750817, 2755894141, 19291258987]

約数ペア:

[(1, 19291258987), (7, 2755894141), (11, 1753750817), (13, 1483942999), (31, 622298677), (49, 393699163), (77, 250535831), (91, 211991857), (143, 134903909), (217, 88899811), (341, 56572607), (403, 47869129), (539, 35790833), (637, 30284551), (1001, 19271987), (1519, 12699973), (2387, 8081801), (2821, 6838447), (4433, 4351739), (7007, 2753141), (16709, 1154543), (19747, 976921), (31031, 621677), (88811, 217217)]