256784080

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{458543}}^1$

素因数の和:458563

約数の個数: 40

約数和(自身を含む): 682313472

約数和(自身を除く): 425529392

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 70, 80, 112, 140, 280, 560, 458543, 917086, 1834172, 2292715, 3209801, 3668344, 4585430, 6419602, 7336688, 9170860, 12839204, 16049005, 18341720, 25678408, 32098010, 36683440, 51356816, 64196020, 128392040, 256784080]

約数ペア:

[(1, 256784080), (2, 128392040), (4, 64196020), (5, 51356816), (7, 36683440), (8, 32098010), (10, 25678408), (14, 18341720), (16, 16049005), (20, 12839204), (28, 9170860), (35, 7336688), (40, 6419602), (56, 4585430), (70, 3668344), (80, 3209801), (112, 2292715), (140, 1834172), (280, 917086), (560, 458543)]