19974032

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{109}}^1\times {\mathrm{881}}^1$

素因数の和:1011

約数の個数: 40

約数和(自身を含む): 42106680

約数和(自身を除く): 22132648

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 104, 109, 208, 218, 436, 872, 881, 1417, 1744, 1762, 2834, 3524, 5668, 7048, 11336, 11453, 14096, 22672, 22906, 45812, 91624, 96029, 183248, 192058, 384116, 768232, 1248377, 1536464, 2496754, 4993508, 9987016, 19974032]

約数ペア:

[(1, 19974032), (2, 9987016), (4, 4993508), (8, 2496754), (13, 1536464), (16, 1248377), (26, 768232), (52, 384116), (104, 192058), (109, 183248), (208, 96029), (218, 91624), (436, 45812), (872, 22906), (881, 22672), (1417, 14096), (1744, 11453), (1762, 11336), (2834, 7048), (3524, 5668)]