21513210

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{251}}^1\times {\mathrm{2857}}^1$

素因数の和:3118

約数の個数: 32

約数和(自身を含む): 51855552

約数和(自身を除く): 30342342

約数列:

[1, 2, 3, 5, 6, 10, 15, 30, 251, 502, 753, 1255, 1506, 2510, 2857, 3765, 5714, 7530, 8571, 14285, 17142, 28570, 42855, 85710, 717107, 1434214, 2151321, 3585535, 4302642, 7171070, 10756605, 21513210]

約数ペア:

[(1, 21513210), (2, 10756605), (3, 7171070), (5, 4302642), (6, 3585535), (10, 2151321), (15, 1434214), (30, 717107), (251, 85710), (502, 42855), (753, 28570), (1255, 17142), (1506, 14285), (2510, 8571), (2857, 7530), (3765, 5714)]