19988021205

素因数分解:

$3^2\times 5^1\times {\mathrm{137}}^1\times {\mathrm{1237}}^1\times {\mathrm{2621}}^1$

素因数の和:4006

約数の個数: 48

約数和(自身を含む): 34940331504

約数和(自身を除く): 14952310299

約数列:

[1, 3, 5, 9, 15, 45, 137, 411, 685, 1233, 1237, 2055, 2621, 3711, 6165, 6185, 7863, 11133, 13105, 18555, 23589, 39315, 55665, 117945, 169469, 359077, 508407, 847345, 1077231, 1525221, 1795385, 2542035, 3231693, 3242177, 5386155, 7626105, 9726531, 16158465, 16210885, 29179593, 48632655, 145897965, 444178249, 1332534747, 2220891245, 3997604241, 6662673735, 19988021205]

約数ペア:

[(1, 19988021205), (3, 6662673735), (5, 3997604241), (9, 2220891245), (15, 1332534747), (45, 444178249), (137, 145897965), (411, 48632655), (685, 29179593), (1233, 16210885), (1237, 16158465), (2055, 9726531), (2621, 7626105), (3711, 5386155), (6165, 3242177), (6185, 3231693), (7863, 2542035), (11133, 1795385), (13105, 1525221), (18555, 1077231), (23589, 847345), (39315, 508407), (55665, 359077), (117945, 169469)]