638642708

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{43}}^1\times {\mathrm{227}}^1\times {\mathrm{1487}}^1$

素因数の和:1772

約数の個数: 48

約数和(自身を含む): 1253919744

約数和(自身を除く): 615277036

約数列:

[1, 2, 4, 11, 22, 43, 44, 86, 172, 227, 454, 473, 908, 946, 1487, 1892, 2497, 2974, 4994, 5948, 9761, 9988, 16357, 19522, 32714, 39044, 63941, 65428, 107371, 127882, 214742, 255764, 337549, 429484, 675098, 703351, 1350196, 1406702, 2813404, 3713039, 7426078, 14514607, 14852156, 29029214, 58058428, 159660677, 319321354, 638642708]

約数ペア:

[(1, 638642708), (2, 319321354), (4, 159660677), (11, 58058428), (22, 29029214), (43, 14852156), (44, 14514607), (86, 7426078), (172, 3713039), (227, 2813404), (454, 1406702), (473, 1350196), (908, 703351), (946, 675098), (1487, 429484), (1892, 337549), (2497, 255764), (2974, 214742), (4994, 127882), (5948, 107371), (9761, 65428), (9988, 63941), (16357, 39044), (19522, 32714)]