19994072

素因数分解:

$2^3\times 7^1\times {\mathrm{557}}^1\times {\mathrm{641}}^1$

素因数の和:1211

約数の個数: 32

約数和(自身を含む): 42988320

約数和(自身を除く): 22994248

約数列:

[1, 2, 4, 7, 8, 14, 28, 56, 557, 641, 1114, 1282, 2228, 2564, 3899, 4456, 4487, 5128, 7798, 8974, 15596, 17948, 31192, 35896, 357037, 714074, 1428148, 2499259, 2856296, 4998518, 9997036, 19994072]

約数ペア:

[(1, 19994072), (2, 9997036), (4, 4998518), (7, 2856296), (8, 2499259), (14, 1428148), (28, 714074), (56, 357037), (557, 35896), (641, 31192), (1114, 17948), (1282, 15596), (2228, 8974), (2564, 7798), (3899, 5128), (4456, 4487)]