21299200

素因数分解:

$2^{16}\times 5^2\times {\mathrm{13}}^1$

素因数の和:55

約数の個数: 102

約数和(自身を含む): 56884814

約数和(自身を除く): 35585614

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 25, 26, 32, 40, 50, 52, 64, 65, 80, 100, 104, 128, 130, 160, 200, 208, 256, 260, 320, 325, 400, 416, 512, 520, 640, 650, 800, 832, 1024, 1040, 1280, 1300, 1600, 1664, 2048, 2080, 2560, 2600, 3200, 3328, 4096, 4160, 5120, 5200, 6400, 6656, 8192, 8320, 10240, 10400, 12800, 13312, 16384, 16640, 20480, 20800, 25600, 26624, 32768, 33280, 40960, 41600, 51200, 53248, 65536, 66560, 81920, 83200, 102400, 106496, 133120, 163840, 166400, 204800, 212992, 266240, 327680, 332800, 409600, 425984, 532480, 665600, 819200, 851968, 1064960, 1331200, 1638400, 2129920, 2662400, 4259840, 5324800, 10649600, 21299200]

約数ペア:

[(1, 21299200), (2, 10649600), (4, 5324800), (5, 4259840), (8, 2662400), (10, 2129920), (13, 1638400), (16, 1331200), (20, 1064960), (25, 851968), (26, 819200), (32, 665600), (40, 532480), (50, 425984), (52, 409600), (64, 332800), (65, 327680), (80, 266240), (100, 212992), (104, 204800), (128, 166400), (130, 163840), (160, 133120), (200, 106496), (208, 102400), (256, 83200), (260, 81920), (320, 66560), (325, 65536), (400, 53248), (416, 51200), (512, 41600), (520, 40960), (640, 33280), (650, 32768), (800, 26624), (832, 25600), (1024, 20800), (1040, 20480), (1280, 16640), (1300, 16384), (1600, 13312), (1664, 12800), (2048, 10400), (2080, 10240), (2560, 8320), (2600, 8192), (3200, 6656), (3328, 6400), (4096, 5200), (4160, 5120)]