19929700

素因数分解:

$2^2\times 5^2\times 7^1\times {\mathrm{71}}^1\times {\mathrm{401}}^1$

素因数の和:493

約数の個数: 72

約数和(自身を含む): 50246784

約数和(自身を除く): 30317084

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 25, 28, 35, 50, 70, 71, 100, 140, 142, 175, 284, 350, 355, 401, 497, 700, 710, 802, 994, 1420, 1604, 1775, 1988, 2005, 2485, 2807, 3550, 4010, 4970, 5614, 7100, 8020, 9940, 10025, 11228, 12425, 14035, 20050, 24850, 28070, 28471, 40100, 49700, 56140, 56942, 70175, 113884, 140350, 142355, 199297, 280700, 284710, 398594, 569420, 711775, 797188, 996485, 1423550, 1992970, 2847100, 3985940, 4982425, 9964850, 19929700]

約数ペア:

[(1, 19929700), (2, 9964850), (4, 4982425), (5, 3985940), (7, 2847100), (10, 1992970), (14, 1423550), (20, 996485), (25, 797188), (28, 711775), (35, 569420), (50, 398594), (70, 284710), (71, 280700), (100, 199297), (140, 142355), (142, 140350), (175, 113884), (284, 70175), (350, 56942), (355, 56140), (401, 49700), (497, 40100), (700, 28471), (710, 28070), (802, 24850), (994, 20050), (1420, 14035), (1604, 12425), (1775, 11228), (1988, 10025), (2005, 9940), (2485, 8020), (2807, 7100), (3550, 5614), (4010, 4970)]