18636800

素因数分解:

$2^{13}\times 5^2\times 7^1\times {\mathrm{13}}^1$

素因数の和:56

約数の個数: 168

約数和(自身を含む): 56881776

約数和(自身を除く): 38244976

約数列:

[1, 2, 4, 5, 7, 8, 10, 13, 14, 16, 20, 25, 26, 28, 32, 35, 40, 50, 52, 56, 64, 65, 70, 80, 91, 100, 104, 112, 128, 130, 140, 160, 175, 182, 200, 208, 224, 256, 260, 280, 320, 325, 350, 364, 400, 416, 448, 455, 512, 520, 560, 640, 650, 700, 728, 800, 832, 896, 910, 1024, 1040, 1120, 1280, 1300, 1400, 1456, 1600, 1664, 1792, 1820, 2048, 2080, 2240, 2275, 2560, 2600, 2800, 2912, 3200, 3328, 3584, 3640, 4096, 4160, 4480, 4550, 5120, 5200, 5600, 5824, 6400, 6656, 7168, 7280, 8192, 8320, 8960, 9100, 10240, 10400, 11200, 11648, 12800, 13312, 14336, 14560, 16640, 17920, 18200, 20480, 20800, 22400, 23296, 25600, 26624, 28672, 29120, 33280, 35840, 36400, 40960, 41600, 44800, 46592, 51200, 53248, 57344, 58240, 66560, 71680, 72800, 83200, 89600, 93184, 102400, 106496, 116480, 133120, 143360, 145600, 166400, 179200, 186368, 204800, 232960, 266240, 286720, 291200, 332800, 358400, 372736, 465920, 532480, 582400, 665600, 716800, 745472, 931840, 1164800, 1331200, 1433600, 1863680, 2329600, 2662400, 3727360, 4659200, 9318400, 18636800]

約数ペア:

[(1, 18636800), (2, 9318400), (4, 4659200), (5, 3727360), (7, 2662400), (8, 2329600), (10, 1863680), (13, 1433600), (14, 1331200), (16, 1164800), (20, 931840), (25, 745472), (26, 716800), (28, 665600), (32, 582400), (35, 532480), (40, 465920), (50, 372736), (52, 358400), (56, 332800), (64, 291200), (65, 286720), (70, 266240), (80, 232960), (91, 204800), (100, 186368), (104, 179200), (112, 166400), (128, 145600), (130, 143360), (140, 133120), (160, 116480), (175, 106496), (182, 102400), (200, 93184), (208, 89600), (224, 83200), (256, 72800), (260, 71680), (280, 66560), (320, 58240), (325, 57344), (350, 53248), (364, 51200), (400, 46592), (416, 44800), (448, 41600), (455, 40960), (512, 36400), (520, 35840), (560, 33280), (640, 29120), (650, 28672), (700, 26624), (728, 25600), (800, 23296), (832, 22400), (896, 20800), (910, 20480), (1024, 18200), (1040, 17920), (1120, 16640), (1280, 14560), (1300, 14336), (1400, 13312), (1456, 12800), (1600, 11648), (1664, 11200), (1792, 10400), (1820, 10240), (2048, 9100), (2080, 8960), (2240, 8320), (2275, 8192), (2560, 7280), (2600, 7168), (2800, 6656), (2912, 6400), (3200, 5824), (3328, 5600), (3584, 5200), (3640, 5120), (4096, 4550), (4160, 4480)]