221821892

素因数分解:

$2^2\times {\mathrm{71}}^1\times {\mathrm{781063}}^1$

素因数の和:781138

約数の個数: 12

約数和(自身を含む): 393656256

約数和(自身を除く): 171834364

約数列:

[1, 2, 4, 71, 142, 284, 781063, 1562126, 3124252, 55455473, 110910946, 221821892]

約数ペア:

[(1, 221821892), (2, 110910946), (4, 55455473), (71, 3124252), (142, 1562126), (284, 781063)]