18379880

素因数分解:

$2^3\times 5^1\times {\mathrm{163}}^1\times {\mathrm{2819}}^1$

素因数の和:2993

約数の個数: 32

約数和(自身を含む): 41623200

約数和(自身を除く): 23243320

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 163, 326, 652, 815, 1304, 1630, 2819, 3260, 5638, 6520, 11276, 14095, 22552, 28190, 56380, 112760, 459497, 918994, 1837988, 2297485, 3675976, 4594970, 9189940, 18379880]

約数ペア:

[(1, 18379880), (2, 9189940), (4, 4594970), (5, 3675976), (8, 2297485), (10, 1837988), (20, 918994), (40, 459497), (163, 112760), (326, 56380), (652, 28190), (815, 22552), (1304, 14095), (1630, 11276), (2819, 6520), (3260, 5638)]