19962884

素因数分解:

$2^2\times {\mathrm{31}}^1\times {\mathrm{199}}^1\times {\mathrm{809}}^1$

素因数の和:1043

約数の個数: 24

約数和(自身を含む): 36288000

約数和(自身を除く): 16325116

約数列:

[1, 2, 4, 31, 62, 124, 199, 398, 796, 809, 1618, 3236, 6169, 12338, 24676, 25079, 50158, 100316, 160991, 321982, 643964, 4990721, 9981442, 19962884]

約数ペア:

[(1, 19962884), (2, 9981442), (4, 4990721), (31, 643964), (62, 321982), (124, 160991), (199, 100316), (398, 50158), (796, 25079), (809, 24676), (1618, 12338), (3236, 6169)]