39895840

素因数分解:

$2^5\times 5^1\times {\mathrm{389}}^1\times {\mathrm{641}}^1$

素因数の和:1045

約数の個数: 48

約数和(自身を含む): 94643640

約数和(自身を除く): 54747800

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 160, 389, 641, 778, 1282, 1556, 1945, 2564, 3112, 3205, 3890, 5128, 6224, 6410, 7780, 10256, 12448, 12820, 15560, 20512, 25640, 31120, 51280, 62240, 102560, 249349, 498698, 997396, 1246745, 1994792, 2493490, 3989584, 4986980, 7979168, 9973960, 19947920, 39895840]

約数ペア:

[(1, 39895840), (2, 19947920), (4, 9973960), (5, 7979168), (8, 4986980), (10, 3989584), (16, 2493490), (20, 1994792), (32, 1246745), (40, 997396), (80, 498698), (160, 249349), (389, 102560), (641, 62240), (778, 51280), (1282, 31120), (1556, 25640), (1945, 20512), (2564, 15560), (3112, 12820), (3205, 12448), (3890, 10256), (5128, 7780), (6224, 6410)]