407702920

素因数分解:

$2^3\times 5^1\times {\mathrm{2131}}^1\times {\mathrm{4783}}^1$

素因数の和:6925

約数の個数: 32

約数和(自身を含む): 917953920

約数和(自身を除く): 510251000

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 2131, 4262, 4783, 8524, 9566, 10655, 17048, 19132, 21310, 23915, 38264, 42620, 47830, 85240, 95660, 191320, 10192573, 20385146, 40770292, 50962865, 81540584, 101925730, 203851460, 407702920]

約数ペア:

[(1, 407702920), (2, 203851460), (4, 101925730), (5, 81540584), (8, 50962865), (10, 40770292), (20, 20385146), (40, 10192573), (2131, 191320), (4262, 95660), (4783, 85240), (8524, 47830), (9566, 42620), (10655, 38264), (17048, 23915), (19132, 21310)]