261309890

素因数分解:

$2^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{257}}^1\times {\mathrm{5981}}^1$

素因数の和:6262

約数の個数: 32

約数和(自身を含む): 500047344

約数和(自身を除く): 238737454

約数列:

[1, 2, 5, 10, 17, 34, 85, 170, 257, 514, 1285, 2570, 4369, 5981, 8738, 11962, 21845, 29905, 43690, 59810, 101677, 203354, 508385, 1016770, 1537117, 3074234, 7685585, 15371170, 26130989, 52261978, 130654945, 261309890]

約数ペア:

[(1, 261309890), (2, 130654945), (5, 52261978), (10, 26130989), (17, 15371170), (34, 7685585), (85, 3074234), (170, 1537117), (257, 1016770), (514, 508385), (1285, 203354), (2570, 101677), (4369, 59810), (5981, 43690), (8738, 29905), (11962, 21845)]