20877120

素因数分解:

$2^6\times 3^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{659}}^1$

素因数の和:693

約数の個数: 168

約数和(自身を含む): 78455520

約数和(自身を除く): 57578400

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 11, 12, 15, 16, 18, 20, 22, 24, 30, 32, 33, 36, 40, 44, 45, 48, 55, 60, 64, 66, 72, 80, 88, 90, 96, 99, 110, 120, 132, 144, 160, 165, 176, 180, 192, 198, 220, 240, 264, 288, 320, 330, 352, 360, 396, 440, 480, 495, 528, 576, 659, 660, 704, 720, 792, 880, 960, 990, 1056, 1318, 1320, 1440, 1584, 1760, 1977, 1980, 2112, 2636, 2640, 2880, 3168, 3295, 3520, 3954, 3960, 5272, 5280, 5931, 6336, 6590, 7249, 7908, 7920, 9885, 10544, 10560, 11862, 13180, 14498, 15816, 15840, 19770, 21088, 21747, 23724, 26360, 28996, 29655, 31632, 31680, 36245, 39540, 42176, 43494, 47448, 52720, 57992, 59310, 63264, 65241, 72490, 79080, 86988, 94896, 105440, 108735, 115984, 118620, 126528, 130482, 144980, 158160, 173976, 189792, 210880, 217470, 231968, 237240, 260964, 289960, 316320, 326205, 347952, 379584, 434940, 463936, 474480, 521928, 579920, 632640, 652410, 695904, 869880, 948960, 1043856, 1159840, 1304820, 1391808, 1739760, 1897920, 2087712, 2319680, 2609640, 3479520, 4175424, 5219280, 6959040, 10438560, 20877120]

約数ペア:

[(1, 20877120), (2, 10438560), (3, 6959040), (4, 5219280), (5, 4175424), (6, 3479520), (8, 2609640), (9, 2319680), (10, 2087712), (11, 1897920), (12, 1739760), (15, 1391808), (16, 1304820), (18, 1159840), (20, 1043856), (22, 948960), (24, 869880), (30, 695904), (32, 652410), (33, 632640), (36, 579920), (40, 521928), (44, 474480), (45, 463936), (48, 434940), (55, 379584), (60, 347952), (64, 326205), (66, 316320), (72, 289960), (80, 260964), (88, 237240), (90, 231968), (96, 217470), (99, 210880), (110, 189792), (120, 173976), (132, 158160), (144, 144980), (160, 130482), (165, 126528), (176, 118620), (180, 115984), (192, 108735), (198, 105440), (220, 94896), (240, 86988), (264, 79080), (288, 72490), (320, 65241), (330, 63264), (352, 59310), (360, 57992), (396, 52720), (440, 47448), (480, 43494), (495, 42176), (528, 39540), (576, 36245), (659, 31680), (660, 31632), (704, 29655), (720, 28996), (792, 26360), (880, 23724), (960, 21747), (990, 21088), (1056, 19770), (1318, 15840), (1320, 15816), (1440, 14498), (1584, 13180), (1760, 11862), (1977, 10560), (1980, 10544), (2112, 9885), (2636, 7920), (2640, 7908), (2880, 7249), (3168, 6590), (3295, 6336), (3520, 5931), (3954, 5280), (3960, 5272)]