19884275

素因数分解:

$5^2\times {\mathrm{43}}^1\times {\mathrm{53}}^1\times {\mathrm{349}}^1$

素因数の和:455

約数の個数: 24

約数和(自身を含む): 25779600

約数和(自身を除く): 5895325

約数列:

[1, 5, 25, 43, 53, 215, 265, 349, 1075, 1325, 1745, 2279, 8725, 11395, 15007, 18497, 56975, 75035, 92485, 375175, 462425, 795371, 3976855, 19884275]

約数ペア:

[(1, 19884275), (5, 3976855), (25, 795371), (43, 462425), (53, 375175), (215, 92485), (265, 75035), (349, 56975), (1075, 18497), (1325, 15007), (1745, 11395), (2279, 8725)]