21510700

素因数分解:

$2^2\times 5^2\times {\mathrm{251}}^1\times {\mathrm{857}}^1$

素因数の和:1122

約数の個数: 36

約数和(自身を含む): 46918872

約数和(自身を除く): 25408172

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 100, 251, 502, 857, 1004, 1255, 1714, 2510, 3428, 4285, 5020, 6275, 8570, 12550, 17140, 21425, 25100, 42850, 85700, 215107, 430214, 860428, 1075535, 2151070, 4302140, 5377675, 10755350, 21510700]

約数ペア:

[(1, 21510700), (2, 10755350), (4, 5377675), (5, 4302140), (10, 2151070), (20, 1075535), (25, 860428), (50, 430214), (100, 215107), (251, 85700), (502, 42850), (857, 25100), (1004, 21425), (1255, 17140), (1714, 12550), (2510, 8570), (3428, 6275), (4285, 5020)]