21890560

素因数分解:

$2^9\times 5^1\times {\mathrm{17}}^1\times {\mathrm{503}}^1$

素因数の和:543

約数の個数: 80

約数和(自身を含む): 55683936

約数和(自身を除く): 33793376

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 32, 34, 40, 64, 68, 80, 85, 128, 136, 160, 170, 256, 272, 320, 340, 503, 512, 544, 640, 680, 1006, 1088, 1280, 1360, 2012, 2176, 2515, 2560, 2720, 4024, 4352, 5030, 5440, 8048, 8551, 8704, 10060, 10880, 16096, 17102, 20120, 21760, 32192, 34204, 40240, 42755, 43520, 64384, 68408, 80480, 85510, 128768, 136816, 160960, 171020, 257536, 273632, 321920, 342040, 547264, 643840, 684080, 1094528, 1287680, 1368160, 2189056, 2736320, 4378112, 5472640, 10945280, 21890560]

約数ペア:

[(1, 21890560), (2, 10945280), (4, 5472640), (5, 4378112), (8, 2736320), (10, 2189056), (16, 1368160), (17, 1287680), (20, 1094528), (32, 684080), (34, 643840), (40, 547264), (64, 342040), (68, 321920), (80, 273632), (85, 257536), (128, 171020), (136, 160960), (160, 136816), (170, 128768), (256, 85510), (272, 80480), (320, 68408), (340, 64384), (503, 43520), (512, 42755), (544, 40240), (640, 34204), (680, 32192), (1006, 21760), (1088, 20120), (1280, 17102), (1360, 16096), (2012, 10880), (2176, 10060), (2515, 8704), (2560, 8551), (2720, 8048), (4024, 5440), (4352, 5030)]