19641388

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{389}}^1\times {\mathrm{971}}^1$

素因数の和:1377

約数の個数: 24

約数和(自身を含む): 37149840

約数和(自身を除く): 17508452

約数列:

[1, 2, 4, 13, 26, 52, 389, 778, 971, 1556, 1942, 3884, 5057, 10114, 12623, 20228, 25246, 50492, 377719, 755438, 1510876, 4910347, 9820694, 19641388]

約数ペア:

[(1, 19641388), (2, 9820694), (4, 4910347), (13, 1510876), (26, 755438), (52, 377719), (389, 50492), (778, 25246), (971, 20228), (1556, 12623), (1942, 10114), (3884, 5057)]