211729520

素因数分解:

$2^4\times 5^1\times {\mathrm{2646619}}^1$

素因数の和:2646632

約数の個数: 20

約数和(自身を含む): 492271320

約数和(自身を除く): 280541800

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 2646619, 5293238, 10586476, 13233095, 21172952, 26466190, 42345904, 52932380, 105864760, 211729520]

約数ペア:

[(1, 211729520), (2, 105864760), (4, 52932380), (5, 42345904), (8, 26466190), (10, 21172952), (16, 13233095), (20, 10586476), (40, 5293238), (80, 2646619)]