21801720

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{97}}^1\times {\mathrm{1873}}^1$

素因数の和:1984

約数の個数: 64

約数和(自身を含む): 66114720

約数和(自身を除く): 44313000

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 40, 60, 97, 120, 194, 291, 388, 485, 582, 776, 970, 1164, 1455, 1873, 1940, 2328, 2910, 3746, 3880, 5619, 5820, 7492, 9365, 11238, 11640, 14984, 18730, 22476, 28095, 37460, 44952, 56190, 74920, 112380, 181681, 224760, 363362, 545043, 726724, 908405, 1090086, 1453448, 1816810, 2180172, 2725215, 3633620, 4360344, 5450430, 7267240, 10900860, 21801720]

約数ペア:

[(1, 21801720), (2, 10900860), (3, 7267240), (4, 5450430), (5, 4360344), (6, 3633620), (8, 2725215), (10, 2180172), (12, 1816810), (15, 1453448), (20, 1090086), (24, 908405), (30, 726724), (40, 545043), (60, 363362), (97, 224760), (120, 181681), (194, 112380), (291, 74920), (388, 56190), (485, 44952), (582, 37460), (776, 28095), (970, 22476), (1164, 18730), (1455, 14984), (1873, 11640), (1940, 11238), (2328, 9365), (2910, 7492), (3746, 5820), (3880, 5619)]