19990684

素因数分解:

$2^2\times 7^1\times {\mathrm{313}}^1\times {\mathrm{2281}}^1$

素因数の和:2605

約数の個数: 24

約数和(自身を含む): 40126688

約数和(自身を除く): 20136004

約数列:

[1, 2, 4, 7, 14, 28, 313, 626, 1252, 2191, 2281, 4382, 4562, 8764, 9124, 15967, 31934, 63868, 713953, 1427906, 2855812, 4997671, 9995342, 19990684]

約数ペア:

[(1, 19990684), (2, 9995342), (4, 4997671), (7, 2855812), (14, 1427906), (28, 713953), (313, 63868), (626, 31934), (1252, 15967), (2191, 9124), (2281, 8764), (4382, 4562)]