137806640

素因数分解:

$2^4\times 5^1\times {\mathrm{397}}^1\times {\mathrm{4339}}^1$

素因数の和:4749

約数の個数: 40

約数和(自身を含む): 321281520

約数和(自身を除く): 183474880

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 397, 794, 1588, 1985, 3176, 3970, 4339, 6352, 7940, 8678, 15880, 17356, 21695, 31760, 34712, 43390, 69424, 86780, 173560, 347120, 1722583, 3445166, 6890332, 8612915, 13780664, 17225830, 27561328, 34451660, 68903320, 137806640]

約数ペア:

[(1, 137806640), (2, 68903320), (4, 34451660), (5, 27561328), (8, 17225830), (10, 13780664), (16, 8612915), (20, 6890332), (40, 3445166), (80, 1722583), (397, 347120), (794, 173560), (1588, 86780), (1985, 69424), (3176, 43390), (3970, 34712), (4339, 31760), (6352, 21695), (7940, 17356), (8678, 15880)]