20745760

素因数分解:

$2^5\times 5^1\times 7^1\times {\mathrm{18523}}^1$

素因数の和:18545

約数の個数: 48

約数和(自身を含む): 56016576

約数和(自身を除く): 35270816

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 40, 56, 70, 80, 112, 140, 160, 224, 280, 560, 1120, 18523, 37046, 74092, 92615, 129661, 148184, 185230, 259322, 296368, 370460, 518644, 592736, 648305, 740920, 1037288, 1296610, 1481840, 2074576, 2593220, 2963680, 4149152, 5186440, 10372880, 20745760]

約数ペア:

[(1, 20745760), (2, 10372880), (4, 5186440), (5, 4149152), (7, 2963680), (8, 2593220), (10, 2074576), (14, 1481840), (16, 1296610), (20, 1037288), (28, 740920), (32, 648305), (35, 592736), (40, 518644), (56, 370460), (70, 296368), (80, 259322), (112, 185230), (140, 148184), (160, 129661), (224, 92615), (280, 74092), (560, 37046), (1120, 18523)]