20162681721

素因数分解:

$3^2\times 7^1\times {\mathrm{13}}^2\times {\mathrm{53}}^1\times {\mathrm{35731}}^1$

素因数の和:35823

約数の個数: 72

約数和(自身を含む): 36722776896

約数和(自身を除く): 16560095175

約数列:

[1, 3, 7, 9, 13, 21, 39, 53, 63, 91, 117, 159, 169, 273, 371, 477, 507, 689, 819, 1113, 1183, 1521, 2067, 3339, 3549, 4823, 6201, 8957, 10647, 14469, 26871, 35731, 43407, 62699, 80613, 107193, 188097, 250117, 321579, 464503, 564291, 750351, 1393509, 1893743, 2251053, 3251521, 4180527, 5681229, 6038539, 9754563, 13256201, 17043687, 18115617, 24618659, 29263689, 39768603, 42269773, 54346851, 73855977, 119305809, 126809319, 172330613, 221567931, 320042567, 380427957, 516991839, 960127701, 1550975517, 2240297969, 2880383103, 6720893907, 20162681721]

約数ペア:

[(1, 20162681721), (3, 6720893907), (7, 2880383103), (9, 2240297969), (13, 1550975517), (21, 960127701), (39, 516991839), (53, 380427957), (63, 320042567), (91, 221567931), (117, 172330613), (159, 126809319), (169, 119305809), (273, 73855977), (371, 54346851), (477, 42269773), (507, 39768603), (689, 29263689), (819, 24618659), (1113, 18115617), (1183, 17043687), (1521, 13256201), (2067, 9754563), (3339, 6038539), (3549, 5681229), (4823, 4180527), (6201, 3251521), (8957, 2251053), (10647, 1893743), (14469, 1393509), (26871, 750351), (35731, 564291), (43407, 464503), (62699, 321579), (80613, 250117), (107193, 188097)]