388625840

素因数分解:

$2^4\times 5^1\times {\mathrm{197}}^1\times {\mathrm{24659}}^1$

素因数の和:24869

約数の個数: 40

約数和(自身を含む): 908178480

約数和(自身を除く): 519552640

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 197, 394, 788, 985, 1576, 1970, 3152, 3940, 7880, 15760, 24659, 49318, 98636, 123295, 197272, 246590, 394544, 493180, 986360, 1972720, 4857823, 9715646, 19431292, 24289115, 38862584, 48578230, 77725168, 97156460, 194312920, 388625840]

約数ペア:

[(1, 388625840), (2, 194312920), (4, 97156460), (5, 77725168), (8, 48578230), (10, 38862584), (16, 24289115), (20, 19431292), (40, 9715646), (80, 4857823), (197, 1972720), (394, 986360), (788, 493180), (985, 394544), (1576, 246590), (1970, 197272), (3152, 123295), (3940, 98636), (7880, 49318), (15760, 24659)]