18884680

素因数分解:

$2^3\times 5^1\times {\mathrm{173}}^1\times {\mathrm{2729}}^1$

素因数の和:2913

約数の個数: 32

約数和(自身を含む): 42751800

約数和(自身を除く): 23867120

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 173, 346, 692, 865, 1384, 1730, 2729, 3460, 5458, 6920, 10916, 13645, 21832, 27290, 54580, 109160, 472117, 944234, 1888468, 2360585, 3776936, 4721170, 9442340, 18884680]

約数ペア:

[(1, 18884680), (2, 9442340), (4, 4721170), (5, 3776936), (8, 2360585), (10, 1888468), (20, 944234), (40, 472117), (173, 109160), (346, 54580), (692, 27290), (865, 21832), (1384, 13645), (1730, 10916), (2729, 6920), (3460, 5458)]