257295280

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{292381}}^1$

素因数の和:292405

約数の個数: 40

約数和(自身を含む): 652596624

約数和(自身を除く): 395301344

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 40, 44, 55, 80, 88, 110, 176, 220, 440, 880, 292381, 584762, 1169524, 1461905, 2339048, 2923810, 3216191, 4678096, 5847620, 6432382, 11695240, 12864764, 16080955, 23390480, 25729528, 32161910, 51459056, 64323820, 128647640, 257295280]

約数ペア:

[(1, 257295280), (2, 128647640), (4, 64323820), (5, 51459056), (8, 32161910), (10, 25729528), (11, 23390480), (16, 16080955), (20, 12864764), (22, 11695240), (40, 6432382), (44, 5847620), (55, 4678096), (80, 3216191), (88, 2923810), (110, 2339048), (176, 1461905), (220, 1169524), (440, 584762), (880, 292381)]