20815360

素因数分解:

$2^9\times 5^1\times {\mathrm{47}}^1\times {\mathrm{173}}^1$

素因数の和:243

約数の個数: 80

約数和(自身を含む): 51264576

約数和(自身を除く): 30449216

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 47, 64, 80, 94, 128, 160, 173, 188, 235, 256, 320, 346, 376, 470, 512, 640, 692, 752, 865, 940, 1280, 1384, 1504, 1730, 1880, 2560, 2768, 3008, 3460, 3760, 5536, 6016, 6920, 7520, 8131, 11072, 12032, 13840, 15040, 16262, 22144, 24064, 27680, 30080, 32524, 40655, 44288, 55360, 60160, 65048, 81310, 88576, 110720, 120320, 130096, 162620, 221440, 260192, 325240, 442880, 520384, 650480, 1040768, 1300960, 2081536, 2601920, 4163072, 5203840, 10407680, 20815360]

約数ペア:

[(1, 20815360), (2, 10407680), (4, 5203840), (5, 4163072), (8, 2601920), (10, 2081536), (16, 1300960), (20, 1040768), (32, 650480), (40, 520384), (47, 442880), (64, 325240), (80, 260192), (94, 221440), (128, 162620), (160, 130096), (173, 120320), (188, 110720), (235, 88576), (256, 81310), (320, 65048), (346, 60160), (376, 55360), (470, 44288), (512, 40655), (640, 32524), (692, 30080), (752, 27680), (865, 24064), (940, 22144), (1280, 16262), (1384, 15040), (1504, 13840), (1730, 12032), (1880, 11072), (2560, 8131), (2768, 7520), (3008, 6920), (3460, 6016), (3760, 5536)]