19501820

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{107}}^1\times {\mathrm{701}}^1$

素因数の和:830

約数の個数: 48

約数和(自身を含む): 44579808

約数和(自身を除く): 25077988

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 107, 130, 214, 260, 428, 535, 701, 1070, 1391, 1402, 2140, 2782, 2804, 3505, 5564, 6955, 7010, 9113, 13910, 14020, 18226, 27820, 36452, 45565, 75007, 91130, 150014, 182260, 300028, 375035, 750070, 975091, 1500140, 1950182, 3900364, 4875455, 9750910, 19501820]

約数ペア:

[(1, 19501820), (2, 9750910), (4, 4875455), (5, 3900364), (10, 1950182), (13, 1500140), (20, 975091), (26, 750070), (52, 375035), (65, 300028), (107, 182260), (130, 150014), (214, 91130), (260, 75007), (428, 45565), (535, 36452), (701, 27820), (1070, 18226), (1391, 14020), (1402, 13910), (2140, 9113), (2782, 7010), (2804, 6955), (3505, 5564)]