20837456

素因数分解:

$2^4\times {\mathrm{31}}^1\times {\mathrm{43}}^1\times {\mathrm{977}}^1$

素因数の和:1059

約数の個数: 40

約数和(自身を含む): 42687744

約数和(自身を除く): 21850288

約数列:

[1, 2, 4, 8, 16, 31, 43, 62, 86, 124, 172, 248, 344, 496, 688, 977, 1333, 1954, 2666, 3908, 5332, 7816, 10664, 15632, 21328, 30287, 42011, 60574, 84022, 121148, 168044, 242296, 336088, 484592, 672176, 1302341, 2604682, 5209364, 10418728, 20837456]

約数ペア:

[(1, 20837456), (2, 10418728), (4, 5209364), (8, 2604682), (16, 1302341), (31, 672176), (43, 484592), (62, 336088), (86, 242296), (124, 168044), (172, 121148), (248, 84022), (344, 60574), (496, 42011), (688, 30287), (977, 21328), (1333, 15632), (1954, 10664), (2666, 7816), (3908, 5332)]