19994615408

素因数分解:

$2^4\times {\mathrm{43}}^1\times {\mathrm{29061941}}^1$

素因数の和:29061992

約数の個数: 20

約数和(自身を含む): 39640488888

約数和(自身を除く): 19645873480

約数列:

[1, 2, 4, 8, 16, 43, 86, 172, 344, 688, 29061941, 58123882, 116247764, 232495528, 464991056, 1249663463, 2499326926, 4998653852, 9997307704, 19994615408]

約数ペア:

[(1, 19994615408), (2, 9997307704), (4, 4998653852), (8, 2499326926), (16, 1249663463), (43, 464991056), (86, 232495528), (172, 116247764), (344, 58123882), (688, 29061941)]