81885265

素因数分解:

$5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{53}}^1\times {\mathrm{4013}}^1$

素因数の和:4089

約数の個数: 32

約数和(自身を含む): 124851456

約数和(自身を除く): 42966191

約数列:

[1, 5, 7, 11, 35, 53, 55, 77, 265, 371, 385, 583, 1855, 2915, 4013, 4081, 20065, 20405, 28091, 44143, 140455, 212689, 220715, 309001, 1063445, 1488823, 1545005, 2339579, 7444115, 11697895, 16377053, 81885265]

約数ペア:

[(1, 81885265), (5, 16377053), (7, 11697895), (11, 7444115), (35, 2339579), (53, 1545005), (55, 1488823), (77, 1063445), (265, 309001), (371, 220715), (385, 212689), (583, 140455), (1855, 44143), (2915, 28091), (4013, 20405), (4081, 20065)]