81981515

素因数分解:

$5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{6869}}^1$

素因数の和:6923

約数の個数: 32

約数和(自身を含む): 126627840

約数和(自身を除く): 44646325

約数列:

[1, 5, 7, 11, 31, 35, 55, 77, 155, 217, 341, 385, 1085, 1705, 2387, 6869, 11935, 34345, 48083, 75559, 212939, 240415, 377795, 528913, 1064695, 1490573, 2342329, 2644565, 7452865, 11711645, 16396303, 81981515]

約数ペア:

[(1, 81981515), (5, 16396303), (7, 11711645), (11, 7452865), (31, 2644565), (35, 2342329), (55, 1490573), (77, 1064695), (155, 528913), (217, 377795), (341, 240415), (385, 212939), (1085, 75559), (1705, 48083), (2387, 34345), (6869, 11935)]