18345520

素因数分解:

$2^4\times 5^1\times {\mathrm{43}}^1\times {\mathrm{5333}}^1$

素因数の和:5389

約数の個数: 40

約数和(自身を含む): 43653456

約数和(自身を除く): 25307936

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 43, 80, 86, 172, 215, 344, 430, 688, 860, 1720, 3440, 5333, 10666, 21332, 26665, 42664, 53330, 85328, 106660, 213320, 229319, 426640, 458638, 917276, 1146595, 1834552, 2293190, 3669104, 4586380, 9172760, 18345520]

約数ペア:

[(1, 18345520), (2, 9172760), (4, 4586380), (5, 3669104), (8, 2293190), (10, 1834552), (16, 1146595), (20, 917276), (40, 458638), (43, 426640), (80, 229319), (86, 213320), (172, 106660), (215, 85328), (344, 53330), (430, 42664), (688, 26665), (860, 21332), (1720, 10666), (3440, 5333)]