21421082524

素因数分解:

$2^2\times {\mathrm{19}}^1\times {\mathrm{653}}^2\times {\mathrm{661}}^1$

素因数の和:1990

約数の個数: 36

約数和(自身を含む): 39580198840

約数和(自身を除く): 18159116316

約数列:

[1, 2, 4, 19, 38, 76, 653, 661, 1306, 1322, 2612, 2644, 12407, 12559, 24814, 25118, 49628, 50236, 426409, 431633, 852818, 863266, 1705636, 1726532, 8101771, 8201027, 16203542, 16402054, 32407084, 32804108, 281856349, 563712698, 1127425396, 5355270631, 10710541262, 21421082524]

約数ペア:

[(1, 21421082524), (2, 10710541262), (4, 5355270631), (19, 1127425396), (38, 563712698), (76, 281856349), (653, 32804108), (661, 32407084), (1306, 16402054), (1322, 16203542), (2612, 8201027), (2644, 8101771), (12407, 1726532), (12559, 1705636), (24814, 863266), (25118, 852818), (49628, 431633), (50236, 426409)]