20138085

素因数分解:

$3^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{71}}^1\times {\mathrm{191}}^1$

素因数の和:287

約数の個数: 64

約数和(自身を含む): 39813120

約数和(自身を除く): 19675035

約数列:

[1, 3, 5, 9, 11, 15, 27, 33, 45, 55, 71, 99, 135, 165, 191, 213, 297, 355, 495, 573, 639, 781, 955, 1065, 1485, 1719, 1917, 2101, 2343, 2865, 3195, 3905, 5157, 6303, 7029, 8595, 9585, 10505, 11715, 13561, 18909, 21087, 25785, 31515, 35145, 40683, 56727, 67805, 94545, 105435, 122049, 149171, 203415, 283635, 366147, 447513, 610245, 745855, 1342539, 1830735, 2237565, 4027617, 6712695, 20138085]

約数ペア:

[(1, 20138085), (3, 6712695), (5, 4027617), (9, 2237565), (11, 1830735), (15, 1342539), (27, 745855), (33, 610245), (45, 447513), (55, 366147), (71, 283635), (99, 203415), (135, 149171), (165, 122049), (191, 105435), (213, 94545), (297, 67805), (355, 56727), (495, 40683), (573, 35145), (639, 31515), (781, 25785), (955, 21087), (1065, 18909), (1485, 13561), (1719, 11715), (1917, 10505), (2101, 9585), (2343, 8595), (2865, 7029), (3195, 6303), (3905, 5157)]