20123803492

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{67}}^1\times {\mathrm{71}}^1\times {\mathrm{81353}}^1$

素因数の和:81508

約数の個数: 48

約数和(自身を含む): 39034300032

約数和(自身を除く): 18910496540

約数列:

[1, 2, 4, 13, 26, 52, 67, 71, 134, 142, 268, 284, 871, 923, 1742, 1846, 3484, 3692, 4757, 9514, 19028, 61841, 81353, 123682, 162706, 247364, 325412, 1057589, 2115178, 4230356, 5450651, 5776063, 10901302, 11552126, 21802604, 23104252, 70858463, 75088819, 141716926, 150177638, 283433852, 300355276, 386996221, 773992442, 1547984884, 5030950873, 10061901746, 20123803492]

約数ペア:

[(1, 20123803492), (2, 10061901746), (4, 5030950873), (13, 1547984884), (26, 773992442), (52, 386996221), (67, 300355276), (71, 283433852), (134, 150177638), (142, 141716926), (268, 75088819), (284, 70858463), (871, 23104252), (923, 21802604), (1742, 11552126), (1846, 10901302), (3484, 5776063), (3692, 5450651), (4757, 4230356), (9514, 2115178), (19028, 1057589), (61841, 325412), (81353, 247364), (123682, 162706)]