9973960

素因数分解:

$2^3\times 5^1\times {\mathrm{389}}^1\times {\mathrm{641}}^1$

素因数の和:1041

約数の個数: 32

約数和(自身を含む): 22534200

約数和(自身を除く): 12560240

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 389, 641, 778, 1282, 1556, 1945, 2564, 3112, 3205, 3890, 5128, 6410, 7780, 12820, 15560, 25640, 249349, 498698, 997396, 1246745, 1994792, 2493490, 4986980, 9973960]

約数ペア:

[(1, 9973960), (2, 4986980), (4, 2493490), (5, 1994792), (8, 1246745), (10, 997396), (20, 498698), (40, 249349), (389, 25640), (641, 15560), (778, 12820), (1282, 7780), (1556, 6410), (1945, 5128), (2564, 3890), (3112, 3205)]