667119380

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{139}}^1\times {\mathrm{7741}}^1$

素因数の和:7920

約数の個数: 48

約数和(自身を含む): 1456734720

約数和(自身を除く): 789615340

約数列:

[1, 2, 4, 5, 10, 20, 31, 62, 124, 139, 155, 278, 310, 556, 620, 695, 1390, 2780, 4309, 7741, 8618, 15482, 17236, 21545, 30964, 38705, 43090, 77410, 86180, 154820, 239971, 479942, 959884, 1075999, 1199855, 2151998, 2399710, 4303996, 4799420, 5379995, 10759990, 21519980, 33355969, 66711938, 133423876, 166779845, 333559690, 667119380]

約数ペア:

[(1, 667119380), (2, 333559690), (4, 166779845), (5, 133423876), (10, 66711938), (20, 33355969), (31, 21519980), (62, 10759990), (124, 5379995), (139, 4799420), (155, 4303996), (278, 2399710), (310, 2151998), (556, 1199855), (620, 1075999), (695, 959884), (1390, 479942), (2780, 239971), (4309, 154820), (7741, 86180), (8618, 77410), (15482, 43090), (17236, 38705), (21545, 30964)]