19904799850

素因数分解:

$2^1\times 5^2\times {\mathrm{13}}^1\times {\mathrm{5419}}^1\times {\mathrm{5651}}^1$

素因数の和:11095

約数の個数: 48

約数和(自身を含む): 39885259680

約数和(自身を除く): 19980459830

約数列:

[1, 2, 5, 10, 13, 25, 26, 50, 65, 130, 325, 650, 5419, 5651, 10838, 11302, 27095, 28255, 54190, 56510, 70447, 73463, 135475, 140894, 141275, 146926, 270950, 282550, 352235, 367315, 704470, 734630, 1761175, 1836575, 3522350, 3673150, 30622769, 61245538, 153113845, 306227690, 398095997, 765569225, 796191994, 1531138450, 1990479985, 3980959970, 9952399925, 19904799850]

約数ペア:

[(1, 19904799850), (2, 9952399925), (5, 3980959970), (10, 1990479985), (13, 1531138450), (25, 796191994), (26, 765569225), (50, 398095997), (65, 306227690), (130, 153113845), (325, 61245538), (650, 30622769), (5419, 3673150), (5651, 3522350), (10838, 1836575), (11302, 1761175), (27095, 734630), (28255, 704470), (54190, 367315), (56510, 352235), (70447, 282550), (73463, 270950), (135475, 146926), (140894, 141275)]