258305560

素因数分解:

$2^3\times 5^1\times {\mathrm{257}}^1\times {\mathrm{25127}}^1$

素因数の和:25395

約数の個数: 32

約数和(自身を含む): 583472160

約数和(自身を除く): 325166600

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 257, 514, 1028, 1285, 2056, 2570, 5140, 10280, 25127, 50254, 100508, 125635, 201016, 251270, 502540, 1005080, 6457639, 12915278, 25830556, 32288195, 51661112, 64576390, 129152780, 258305560]

約数ペア:

[(1, 258305560), (2, 129152780), (4, 64576390), (5, 51661112), (8, 32288195), (10, 25830556), (20, 12915278), (40, 6457639), (257, 1005080), (514, 502540), (1028, 251270), (1285, 201016), (2056, 125635), (2570, 100508), (5140, 50254), (10280, 25127)]