290590780

素因数分解:

$2^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{389}}^1\times {\mathrm{911}}^1$

素因数の和:1350

約数の個数: 48

約数和(自身を含む): 627419520

約数和(自身を除く): 336828740

約数列:

[1, 2, 4, 5, 10, 20, 41, 82, 164, 205, 389, 410, 778, 820, 911, 1556, 1822, 1945, 3644, 3890, 4555, 7780, 9110, 15949, 18220, 31898, 37351, 63796, 74702, 79745, 149404, 159490, 186755, 318980, 354379, 373510, 708758, 747020, 1417516, 1771895, 3543790, 7087580, 14529539, 29059078, 58118156, 72647695, 145295390, 290590780]

約数ペア:

[(1, 290590780), (2, 145295390), (4, 72647695), (5, 58118156), (10, 29059078), (20, 14529539), (41, 7087580), (82, 3543790), (164, 1771895), (205, 1417516), (389, 747020), (410, 708758), (778, 373510), (820, 354379), (911, 318980), (1556, 186755), (1822, 159490), (1945, 149404), (3644, 79745), (3890, 74702), (4555, 63796), (7780, 37351), (9110, 31898), (15949, 18220)]