19746740

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{53}}^1\times {\mathrm{1433}}^1$

素因数の和:1508

約数の個数: 48

約数和(自身を含む): 45532368

約数和(自身を除く): 25785628

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 53, 65, 106, 130, 212, 260, 265, 530, 689, 1060, 1378, 1433, 2756, 2866, 3445, 5732, 6890, 7165, 13780, 14330, 18629, 28660, 37258, 74516, 75949, 93145, 151898, 186290, 303796, 372580, 379745, 759490, 987337, 1518980, 1974674, 3949348, 4936685, 9873370, 19746740]

約数ペア:

[(1, 19746740), (2, 9873370), (4, 4936685), (5, 3949348), (10, 1974674), (13, 1518980), (20, 987337), (26, 759490), (52, 379745), (53, 372580), (65, 303796), (106, 186290), (130, 151898), (212, 93145), (260, 75949), (265, 74516), (530, 37258), (689, 28660), (1060, 18629), (1378, 14330), (1433, 13780), (2756, 7165), (2866, 6890), (3445, 5732)]