15921920

素因数分解:

$2^8\times 5^1\times 7^1\times {\mathrm{1777}}^1$

素因数の和:1805

約数の個数: 72

約数和(自身を含む): 43610784

約数和(自身を除く): 27688864

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 40, 56, 64, 70, 80, 112, 128, 140, 160, 224, 256, 280, 320, 448, 560, 640, 896, 1120, 1280, 1777, 1792, 2240, 3554, 4480, 7108, 8885, 8960, 12439, 14216, 17770, 24878, 28432, 35540, 49756, 56864, 62195, 71080, 99512, 113728, 124390, 142160, 199024, 227456, 248780, 284320, 398048, 454912, 497560, 568640, 796096, 995120, 1137280, 1592192, 1990240, 2274560, 3184384, 3980480, 7960960, 15921920]

約数ペア:

[(1, 15921920), (2, 7960960), (4, 3980480), (5, 3184384), (7, 2274560), (8, 1990240), (10, 1592192), (14, 1137280), (16, 995120), (20, 796096), (28, 568640), (32, 497560), (35, 454912), (40, 398048), (56, 284320), (64, 248780), (70, 227456), (80, 199024), (112, 142160), (128, 124390), (140, 113728), (160, 99512), (224, 71080), (256, 62195), (280, 56864), (320, 49756), (448, 35540), (560, 28432), (640, 24878), (896, 17770), (1120, 14216), (1280, 12439), (1777, 8960), (1792, 8885), (2240, 7108), (3554, 4480)]