31571920

素因数分解:

$2^4\times 5^1\times {\mathrm{19}}^1\times {\mathrm{20771}}^1$

素因数の和:20803

約数の個数: 40

約数和(自身を含む): 77271840

約数和(自身を除く): 45699920

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 38, 40, 76, 80, 95, 152, 190, 304, 380, 760, 1520, 20771, 41542, 83084, 103855, 166168, 207710, 332336, 394649, 415420, 789298, 830840, 1578596, 1661680, 1973245, 3157192, 3946490, 6314384, 7892980, 15785960, 31571920]

約数ペア:

[(1, 31571920), (2, 15785960), (4, 7892980), (5, 6314384), (8, 3946490), (10, 3157192), (16, 1973245), (19, 1661680), (20, 1578596), (38, 830840), (40, 789298), (76, 415420), (80, 394649), (95, 332336), (152, 207710), (190, 166168), (304, 103855), (380, 83084), (760, 41542), (1520, 20771)]