257907664

素因数分解:

$2^4\times 7^1\times {\mathrm{107}}^1\times {\mathrm{21521}}^1$

素因数の和:21643

約数の個数: 40

約数和(自身を含む): 576445248

約数和(自身を除く): 318537584

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 56, 107, 112, 214, 428, 749, 856, 1498, 1712, 2996, 5992, 11984, 21521, 43042, 86084, 150647, 172168, 301294, 344336, 602588, 1205176, 2302747, 2410352, 4605494, 9210988, 16119229, 18421976, 32238458, 36843952, 64476916, 128953832, 257907664]

約数ペア:

[(1, 257907664), (2, 128953832), (4, 64476916), (7, 36843952), (8, 32238458), (14, 18421976), (16, 16119229), (28, 9210988), (56, 4605494), (107, 2410352), (112, 2302747), (214, 1205176), (428, 602588), (749, 344336), (856, 301294), (1498, 172168), (1712, 150647), (2996, 86084), (5992, 43042), (11984, 21521)]