20770695

素因数分解:

$3^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{71}}^1\times {\mathrm{197}}^1$

素因数の和:293

約数の個数: 64

約数和(自身を含む): 41057280

約数和(自身を除く): 20286585

約数列:

[1, 3, 5, 9, 11, 15, 27, 33, 45, 55, 71, 99, 135, 165, 197, 213, 297, 355, 495, 591, 639, 781, 985, 1065, 1485, 1773, 1917, 2167, 2343, 2955, 3195, 3905, 5319, 6501, 7029, 8865, 9585, 10835, 11715, 13987, 19503, 21087, 26595, 32505, 35145, 41961, 58509, 69935, 97515, 105435, 125883, 153857, 209805, 292545, 377649, 461571, 629415, 769285, 1384713, 1888245, 2307855, 4154139, 6923565, 20770695]

約数ペア:

[(1, 20770695), (3, 6923565), (5, 4154139), (9, 2307855), (11, 1888245), (15, 1384713), (27, 769285), (33, 629415), (45, 461571), (55, 377649), (71, 292545), (99, 209805), (135, 153857), (165, 125883), (197, 105435), (213, 97515), (297, 69935), (355, 58509), (495, 41961), (591, 35145), (639, 32505), (781, 26595), (985, 21087), (1065, 19503), (1485, 13987), (1773, 11715), (1917, 10835), (2167, 9585), (2343, 8865), (2955, 7029), (3195, 6501), (3905, 5319)]