20289724

素因数分解:

$2^2\times 7^2\times {\mathrm{13}}^1\times {\mathrm{7963}}^1$

素因数の和:7994

約数の個数: 36

約数和(自身を含む): 44486904

約数和(自身を除く): 24197180

約数列:

[1, 2, 4, 7, 13, 14, 26, 28, 49, 52, 91, 98, 182, 196, 364, 637, 1274, 2548, 7963, 15926, 31852, 55741, 103519, 111482, 207038, 222964, 390187, 414076, 724633, 780374, 1449266, 1560748, 2898532, 5072431, 10144862, 20289724]

約数ペア:

[(1, 20289724), (2, 10144862), (4, 5072431), (7, 2898532), (13, 1560748), (14, 1449266), (26, 780374), (28, 724633), (49, 414076), (52, 390187), (91, 222964), (98, 207038), (182, 111482), (196, 103519), (364, 55741), (637, 31852), (1274, 15926), (2548, 7963)]